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You and your colleagues can open and work on the same Excel workbook. This is called co-authoring. When you co-author, you can see each other's changes quickly—in a matter of seconds. And with certain versions of Excel, you'll see other people's selections in different colors. If you're using a version of Excel that supports co-authoring, you can select Share in the upper-right corner, type email addresses, and then choose a cloud location. But if you need more details, like which versions are supported and where the file can be stored, this article will walk you through the process.

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Note: This feature is only available if you have a Microsoft 365 subscription. If you are a Microsoft 365subscriber, make sure you have the latest version of Office.Buy or try Microsoft 365

To co-author in Excel for Windows desktops, you need to make sure certain things are set up before you start. After that, it just takes a few steps to co-author with other people.

Using a web browser, upload or create a new workbook on OneDrive, OneDrive for Business, or a SharePoint Online library. Note that SharePoint On-Premises sites (sites that are not hosted by Microsoft) do not support co-authoring. If you aren't sure which one you're using, ask the person in charge of your site, or your IT department.

  1. If you uploaded the file, select the filename to open it. The workbook will open in a new tab in your web browser.

  2. Select the Open in Desktop App button.

  3. When the file opens in the Excel desktop app, you may see a yellow bar which says the file is in Protected View. Select the Enable Editing button if that's the case.

  4. Select Share in the upper-right corner.

  5. By default, all recipients will be able to edit the workbook, however, you can change the settings by selecting the can edit option.

  6. Type email addresses in the address box, and separate each with a semicolon. 

  7. Add a message for your recipients. This step is optional.

  8. Select Send.

Note: If you want to send the link yourself, don't select the Send button. Instead, select Copy link at the bottom of the pane.

If you selected the Share button, people will receive an email message inviting them to open the file. They can select the link to open the workbook. A web browser will open, and the workbook will open in Excel for the web. If they want to use the Excel desktop app to co-author, they can select Edit in Desktop App. However, they'll need a version of the Excel app that supports co-authoring. Excel for Android, Excel for iOS, Excel Mobile, and Excel for Microsoft 365 subscribers are the versions that currently support co-authoring. If they don't have a supported version, they can edit in the browser.

Note: If they're using the latest version of Excel, PowerPoint, or Word there's an easier way—they can select File > Open and select Shared with Me.

With the file still open in Excel, make sure that AutoSave is on in the upper-left corner. When others eventually open the file, you'll be co-authoring together. You know you're co-authoring if you see pictures of people in the upper-right of the Excel window. (You may also see their initials, or a "G" which stands for guest.)

People icons, When others are co-authoring, they'll show up here

Co-authoring tips:

  • You might see other people's selections in different colors. This happens if they're using Excel for Microsoft 365 subscribers, Excel for the web, Excel for Android, Excel Mobile, or Excel for iOS. If they're using another version, you won't see their selections, but their changes will appear as they're working.

  • If you see other people's selections in different colors, they'll show up as blue, purple and so on. However, your selection will always be green. And on other people’s screens, their own selections will be green as well. If you lose track of who’s who, rest your cursor over the selection, and the person’s name will be revealed. If you want to jump to where someone is working, select their picture or initials, and then select the Go to option.

Frequently asked questions

In Excel for Microsoft 365 subscribers, you might notice AutoSave in the upper-left corner. AutoSave is enabled when a file is stored on OneDrive, OneDrive for Business, or SharePoint Online. It automatically saves your changes to the cloud as you're working. And if other people are working on the same file, AutoSave lets them see your changes in just a matter of seconds. See What is AutoSave? for more information on AutoSave, including reasons why it may be available or unavailable.

There are a handful of reasons why this error can occur. The most common one is because someone has opened the file with a version of Excel that doesn't support co-authoring. If just one person does this, then everyone else will get the "locked" error—even if everyone else is using a version of Excel that does support co-authoring.

Versions of Excel that support co-authoring:

  • Excel for Microsoft 365*

  • Excel for Microsoft 365 for Mac*

  • Excel for the web

  • Excel for Android

  • Excel for iOS

  • Excel Mobile

* Co-authoring in this version requires you to have the latest version of Excel for Microsoft 365 installed, and requires you to sign in to a Microsoft 365 subscription account. Note that if you have a work or school account, you might not have a version that supports co-authoring yet. This might be because your administrator hasn’t provided the latest version to install.

If you're still getting the "locked" error, see Excel file is locked for editing for more solutions to this problem.

You can see other people's selections in different colors, but only if you and other people are using Excel for Microsoft 365 subscribers, Excel for the web, Excel for Android, Excel Mobile, or Excel for iOS. In addition, if people are using Excel for Microsoft 365 subscribers, then everyone needs to have AutoSave on to see colored selections.

If you're using Excel for Microsoft 365, Excel for the web, Excel for Android, or Excel for iOS and you don't see other people's selections, then wait a few seconds. If you still don't see someone's selections, make sure they're using Excel for Microsoft 365, Excel for the web, Excel for Android, or Excel for iOS. If they're using another version, like Excel Mobile, then their selections will not appear to you. However, any changes they make will show up almost instantly. In addition, if they're using an older version of Excel, then they won't be able to edit the file at the same time as you, and you won't be able to see their selections.

To co-author and see changes made by others, everyone needs to use a version of the Excel app that supports co-authoring. Excel for Android, Excel for iOS, Excel Mobile, and Excel for Microsoft 365 subscribers are the versions that currently support co-authoring. If they don't have a supported version, they can always use Excel for the web in their web browser. If that doesn't solve the problem, try one or more of the following:

  • Wait a minute or two. Sometimes it takes some time for Excel and the cloud to communicate with each other.

  • Tell everyone to select the Enable Editing button if it appears.

  • Make sure everyone who's working in Excel for Microsoft 365 subscribers has AutoSave on in the upper-left corner of the Excel window.

  • If you're using OneDrive to sync files, make sure it isn't paused, and make sure that Use Office applications to sync Office files... is turned on. Details on this setting can be found here.

  • Make sure those who are working in Excel for Android have AutoSave on. They can turn it on by tapping File > Gear button > AutoSave.

  • Make sure those who are working in Excel for iOS have AutoSave on. They can turn it on by tapping File File button > AutoSave.

  • Make sure the file is not read-only.

  • On a Windows PC, open the file and go to File > Info. Resolve any errors that may be shown there.

This may happen occasionally if someone uses an Excel feature that is not fully supported in Excel co-authoring yet. This can stop the co-authoring process temporarily. If you don’t have any unsaved changes, simply select Refresh. If you have unsaved changes that you don’t need to keep, you can select Discard changes. For stuff that you need to keep, select Save a Copy and save the file as a different name. Then, select and copy the changes you need to keep. Finally, one last step—reopen the original file that's on the cloud and paste your changes back in.

In general, the last change that is saved, either with the Save button or automatically with AutoSave, is the one that “wins.” There are some exceptions to this, but that’s generally how it works. If you don’t want to have conflicts with other people, assign areas or sheets to each person. You can explain these assignments when you send the link out, or you can make the assignments obvious in the workbook itself by putting people’s names in heading cells, or naming sheets with people’s names.

Keep in mind that if you're using OneDrive to sync files, changes you make while your computer is offline won't get merged until your computer is online again. And once online, all your changes get merged at once.

Yes. In Excel for Microsoft 365, select File > Info > View and restore previous versions. Then find a past version in the list and select Open version. The past version will open. If you want to restore it to the current version, wait until everyone is no longer co-authoring, and then select Restore. For more information on versions, see View historical versions of Microsoft 365 files.

To co-author in Excel for Mac desktops, you need to make sure certain things are set up before you start. After that, it just takes a few steps to co-author with other people.

Using your web browser, upload or create a new workbook on OneDrive, OneDrive for Business, or a SharePoint Online library. Note that SharePoint On-Premises sites (sites that are not hosted by Microsoft), do not support co-authoring. If you aren't sure which one you're using, ask the person in charge of your site, or your IT department.

  1. If you uploaded the file, select the filename to open it. The workbook will open in a new tab in your web browser.

  2. Select the Open in Desktop App button.

  3. When the file opens in the Excel desktop app, you may see a yellow bar which says the file is in Protected View. Select the Enable Editing button if that's the case.

  4. Select Share in the upper-right corner.

  5. By default, all recipients will be able to edit the workbook, however, you can change the settings by selecting the can edit option.

  6. Type email addresses in the address box, and separate each with a semicolon. 

  7. Add a message for your recipients. This step is optional.

  8. Select Send.

Note: If you want to send the link yourself, don't select the Send button. Instead, select Copy link at the bottom of the pane.

If you selected the Share button, people will receive an email message inviting them to open the file. They can select the link to open the workbook. A web browser will open, and the workbook will open in Excel for the web. If they want to use an Excel app to co-author, they can select Edit in Desktop App. However, they'll need a version of the Excel app that supports co-authoring. Excel for Android, Excel for iOS, Excel Mobile, and Excel for Microsoft 365 are the versions that currently support co-authoring. If they don't have a supported version, they can edit in the browser to edit the file.

Tip: If they're using the latest version of Excel for Microsoft 365, there's an easier way—they can select File > Open... > Shared and select a file that has been shared by another person.

With the file still open in Excel, make sure that AutoSave is on in the upper-left corner. When others eventually open the file, you'll be co-authoring together. If you're in the same area as them, you might see their cell selections in a different color than yours. You'll also see their changes appear as they're working. In addition, if you select Share in the upper-right, you'll see pictures of people and their name or email address. (You may also see their initials, or a "G" which stands for guest.)

Frequently asked questions

In Excel for Microsoft 365, you might notice AutoSave in the upper-left corner. AutoSave is enabled when a file is stored on OneDrive, OneDrive for Business, or SharePoint Online. It automatically saves your changes to the cloud as you're working. And, if other people are working on the same file, AutoSave lets them see your changes in just a matter of seconds. See What is AutoSave? for more information on AutoSave, including reasons why it may be available or unavailable.

There are a handful of reasons why this error can occur. The most common one is because someone has opened the file with a version of Excel that doesn't support co-authoring. If just one person does this, then everyone else will get the "locked" error—even if everyone else is using a version of Excel that does support co-authoring.

Versions of Excel that support co-authoring:

  • Excel for Microsoft 365*

  • Excel for Microsoft 365 for Mac*

  • Excel for the web

  • Excel for Android

  • Excel for iOS

  • Excel Mobile

* Co-authoring in this version requires you to have the latest version of Excel installed, and requires you to sign in to a Microsoft 365 subscription account. Note that if you have a work or school account, you might not have a version that supports co-authoring yet. This might be because your administrator hasn’t provided the latest version to install.

If you're still getting the "locked" error, see Excel file is locked for editing for more solutions to this problem.

You can see other people's selections in different colors, but only if you and other people are using Excel for Microsoft 365, Excel for the web, Excel for Android, Excel Mobile, or Excel for iOS. In addition, if people are using Excel for Microsoft 365, then everyone needs to have AutoSave on to see colored selections.

If you're using Excel for Microsoft 365, Excel for the web, Excel for Android, or Excel for iOS and you don't see other people's selections, then wait a few seconds. If you still don't see someone's selections, make sure they're using Excel for Microsoft 365, Excel for the web, Excel for Android, or Excel for iOS. If they're using another version, like Excel Mobile, then their selections will not appear to you. However, any changes they make will show up almost instantly. In addition, if they're using an older version of Excel, then they won't be able to edit the file at the same time as you, and you won't be able to see their selections.

To co-author and see changes made by others, everyone needs to use a version of the Excel app that supports co-authoring. Excel for Android, Excel for iOS, and Excel Mobile support co-authoring. In addition, Excel for Microsoft 365 supports co-authoring when you have a Microsoft 365 subscription. If somebody doesn't have a supported version, they can always use Excel for the web in their web browser. If that doesn't solve the problem, try one or more of the following:

  • Wait a minute or two. Sometimes it takes some time for Excel and the cloud to communicate with each other.

  • Tell everyone to select the Enable Editing button if it appears.

  • Make sure everyone who's working in Excel for Microsoft 365 or Excel for Microsoft 365 for Mac has AutoSave on in the upper-left corner of the Excel window.

  • If you're using OneDrive to sync files, make sure it's not paused, and make sure that Use Office 2016 to sync files... is turned on. Details on this setting can be found here.

  • Make sure those who are working in Excel for Android have AutoSave on. They can turn it on by tapping File > Gear button > AutoSave.

  • Make sure those who are working in Excel for iOS have AutoSave on. They can turn it on by tapping File File button > AutoSave.

  • Make sure the file isn't read-only.

  • On a Windows PC, open the file and go to File > Info. Resolve any errors that may be shown there.

This may happen occasionally if someone uses an Excel feature that isn't fully supported in Excel co-authoring yet. This can stop the co-authoring process temporarily. If you don’t have any unsaved changes, simply select Refresh. If you have unsaved changes that you don’t need to keep, you can select Discard changes. For stuff that you need to keep, select Save a Copy and save the file as a different name. Then, select and copy the changes you need to keep. Finally, one last step—reopen the original file that's on the cloud and paste your changes back in.

In general, the last change that's saved, either with the Save button or automatically with AutoSave, is the one that “wins.” There are some exceptions to this, but that’s generally how it works. If you don’t want to have conflicts with other people, assign areas or sheets to each person. You can explain these assignments when you send the link out, or you can make the assignments obvious in the workbook itself by putting people’s names in heading cells, or naming sheets with people’s names.

Keep in mind that if you're using OneDrive to sync files, changes you make while your computer is offline won't get merged until your computer is online again. And once online, all your changes get merged at once.

Yes. Select File > Restore > Browse Version History. Then find a past version in the list, and select Open Version. The past version will open. If you want to restore it to the current version, wait until everyone is no longer co-authoring, and then select Restore.

It takes just four steps to co-author in Excel for the web.

Using a web browser, upload or create a new workbook on OneDrive, OneDrive for Business, or a SharePoint Online library.

  1. At the top of the ribbon, select Share. The Send Link dialog opens so you can send people a link to the workbook.

  2. By default, anyone in your organization can use the link to open and edit the workbook. If you want to adjust who can use the link and what they can do, select People in [Your organization] with the link can edit, choose the options you want in the Link Settings dialog, and then select Apply.  

  3. In the Send Link dialog, enter email addresses, separated by semicolons. 

  4. Add a message for your recipients. This step is optional.

  5. Select Send.

Note: If you want to send the link yourself, don't select the Send button. Instead, select Copy link at the bottom of the pane.

If you selected the Share button, people will receive an email message inviting them to open the file. They can select the link to open the workbook. A web browser will open, and the workbook will open in Excel for the web. If they want to use an Excel app to co-author, they can select Edit in Desktop App. However, they'll need a version of the Excel app that supports co-authoring. Excel for Android, Excel for iOS, Excel Mobile, and Excel for Microsoft 365 are the versions that currently support co-authoring. If they don't have a supported version, they can edit in the browser.

Now you can co-author the workbook at the same time as other people. You know you're co-authoring with one other person if you see a message in the upper-right corner that says they're editing. If more than one other person is editing, you'll see a different message that tells you the number of people that are co-authoring. For example: "2 other people are here."

Co-authoring tips:

  • To review changes others have made since you opened the file, select Show Changes. This opens a pane where you can see the changes, including previous cell values (if any have changed).

  • If you want to jump to where someone is working, select their name, and then select the Editing....

  • You might see other people's selections in different colors. This happens if they're using Excel for Microsoft 365, Excel for the web, Excel for Android, Excel Mobile, or Excel for iOS. If they're using another version, you won't see their selections, but their changes will appear as they're working.

  • If you see other people's selections in different colors, they'll show up as blue, purple and so on. However, your selection will always be green. And on other people’s screens, their own selections will be green as well. If you lose track of who’s who, rest your cursor over the selection, and the person’s name will be revealed.

Frequently asked questions

There are a handful of reasons why this error can occur. The most common one is because someone has opened the file with a version of Excel that doesn't support co-authoring. If just one person does this, then everyone else will get the "locked" error — even if everyone else is using a version of Excel that does support co-authoring.

Versions of Excel that support co-authoring:

  • Excel for Microsoft 365*

  • Excel for Microsoft 365 for Mac*

  • Excel for the web

  • Excel for Android

  • Excel for iOS

  • Excel Mobile

* Co-authoring in this version requires you to have the latest version of Excel installed, and requires you to sign in to a Microsoft 365 subscription account. Note that if you have a work or school account, you might not have a version that supports co-authoring yet. This might be because your administrator hasn’t provided the latest version to install.

If you're still getting the "locked" error, see Excel file is locked for editing for more solutions to this problem.

You can see other people's selections in different colors, but only if you and other people are using Excel for Microsoft 365, Excel for the web, Excel for Android, Excel Mobile, or Excel for iOS. In addition, if people are using Excel for Microsoft 365, then everyone needs to have AutoSave on to see colored selections.

If you're using Excel for Microsoft 365, Excel for the web, Excel for Android, or Excel for iOS and you don't see other people's selections, then wait a few seconds. If you still don't see someone's selections, make sure they're using Excel for Microsoft 365, Excel for the web, Excel for Android, or Excel for iOS. If they're using another version, like Excel Mobile, then their selections will not appear to you. However, any changes they make will show up almost instantly. In addition, if they're using an older version of Excel, then they won't be able to edit the file at the same time as you, and you won't be able to see their selections.

To co-author and see changes made by others, everyone needs to use a version of the Excel app that supports co-authoring. Excel for Android, Excel for iOS, Excel Mobile, and Excel for Microsoft 365 are the versions that currently support co-authoring. If they don't have a supported version, they can always use Excel for the web in their web browser. If that doesn't solve the problem, try one or more of the following:

  • Wait a minute or two. Sometimes it takes some time for Excel and the cloud to communicate with each other.

  • Tell everyone to select the Enable Editing button if it appears.

  • Make sure everyone who is working in Excel for Microsoft 365 has AutoSave on.

  • If someone is using OneDrive to sync files, they need to make sure it isn't paused. And they need the Use Office 2016 to sync files... setting turned on. Details on this setting can be found here.

  • Make sure those who are working in Excel for Android have AutoSave on. They can turn it on by tapping File > Gear button > AutoSave.

  • Make sure those who are working in Excel for iOS have AutoSave on. They can turn it on by tapping File File button > AutoSave.

  • Make sure the file is not read-only.

  • On a Windows PC, open the file and go to File > Info. Resolve any errors that may be shown there.

This may happen occasionally if someone uses an Excel feature that isn't fully supported in Excel co-authoring yet, and it can stop the co-authoring process temporarily. If you have unsaved changes that you don’t need to keep, you can select Reload. For stuff that you need to keep, select Save a Copy and save the file as a different name. Then, select and copy the changes you need to keep. Finally, one last step: Reopen the original file that's on the cloud and paste your changes back in.

In general, the last change that is saved, either with the Save button or automatically with AutoSave, is the one that “wins.” There are some exceptions to this, but that’s generally how it works. If you don’t want to have conflicts with other people, assign areas or sheets to each person. You can explain these assignments when you send the link out, or you can make the assignments obvious in the workbook itself by putting people’s names in heading cells, or naming sheets with people’s names.

Keep in mind that if someone is using OneDrive to sync files, changes they make while their computer is offline won't get merged until their computer is online again. And once online, all their changes get merged at once.

Yes. In Excel for the web, go to the folder that contains the file. Then right-click the filename and choose Version history. Then select an older version on the left and that version will open. If you want to restore it to the current version, wait until everyone is no longer co-authoring, and then select Restore.

To co-author in Excel Android, you need to make sure certain things are set up before you start. After that, it just takes a few steps to co-author with other people.

  • You need the latest version of Excel installed, and you need to sign in to Excel with a Microsoft account. Go to File > Open and make sure your Microsoft account is listed there. If it isn't, tap Add a place to add the account. Note that if you have a phone or tablet that's larger than 10.1 inches, you need to sign in with a Microsoft 365 subscription account.

  • You need to use .xlsx, .xlsm, or .xlsb files. If your file isn’t in this format, open the file in a desktop version of Excel. Then tap File > Save As > Browse > Save as type and change the format to .xlsx, .xlsm, or .xlsb.

  1. Create or open a file, and then tap File > Save As.

  2. Check the current location of the file. If OneDrive or SharePoint are selected, then tap the Back button, and go to the next step. If one of these is not selected, then tap OneDrive or SharePoint on the left, name the file, and then tap Save.

  1. Tap Share icon in the upper-right.

  2. Type email addresses in the Invite people box, and separate each with a semicolon.

  3. Make sure to also select Can edit.

  4. When you’re done, tap the Share button. Tapping this button will send email messages to people for you.

    Tip: If you want to send the link yourself, don't tap the Share button. Instead, tap Share as link.

If you tapped the Share button, people will receive an email message inviting them to open the file. They can select the link to open the workbook. A web browser will open the workbook in Excel for the web. They can co-author in Excel for the web right away by selecting Edit Workbook > Edit in Browser.

If they want to use an Excel app and not Excel for the web to co-author, they can select Edit Workbook > Edit in Excel. However, they'll need a version of the Excel app that supports co-authoring. Excel for Android, Excel for iOS, Excel Mobile, and Excel for Microsoft 365 are the versions that currently support co-authoring.

Now you can co-author the workbook at the same time as other people. To see who's editing the file with you, tap Share in the upper-right, and then tap Manage. If there are others working on the file at the same time as you, you'll see their name listed. If they have an Editing label, they're working on the file.

Frequently asked questions

There are a handful of reasons why this error can occur. The most common one is because someone has opened the file with a version of Excel that doesn't support co-authoring. If just one person does this, then everyone else will get the "locked" error—even if everyone else is using a version of Excel that does support co-authoring.

Versions of Excel that support co-authoring:

  • Excel for Microsoft 365*

  • Excel for Microsoft 365 for Mac*

  • Excel for the web

  • Excel for Android

  • Excel for iOS

  • Excel Mobile

* Co-authoring in this version requires you to have the latest version of Excel installed, and requires you to sign in to a Microsoft 365 subscription account. Note that if you have a work or school account, you might not have a version that supports co-authoring yet. This might be because your administrator hasn’t provided the latest version to install.

If you're still getting the "locked" error, see Excel file is locked for editing for more solutions to this problem.

You can see other people's selections in different colors, but only if you and other people are using Excel for Microsoft 365, Excel for the web, Excel for Android, Excel Mobile, or Excel for iOS. In addition, if people are using Excel for Microsoft 365, then everyone needs to have AutoSave on to see colored selections.

If you're using Excel for Microsoft 365, Excel for the web, Excel for Android, or Excel for iOS and you don't see other people's selections, then wait a few seconds. If you still don't see someone's selections, make sure they're using Excel for Microsoft 365, Excel for the web, Excel for Android, or Excel for iOS. If they're using another version, like Excel Mobile, then their selections will not appear to you. However, any changes they make will show up almost instantly. In addition, if they're using an older version of Excel, then they won't be able to edit the file at the same time as you, and you won't be able to see their selections.

To co-author and see changes made by others, everyone needs to use a version of the Excel app that supports co-authoring. Excel for Android, Excel for iOS, Excel Mobile, and Excel for Microsoft 365 are the versions that currently support co-authoring. If they don't have a supported version, they can always use Excel for the web in their web browser by selecting Edit Workbook > Edit in Browser. If that doesn't solve the problem, try one or more of the following:

  • Wait a minute or two. Sometimes it takes some time for Excel and the cloud to communicate with each other.

  • Tell everyone to select the Enable Editing button if it appears.

  • Make sure everyone who's working in Excel for Microsoft 365 has AutoSave on in the upper-left corner of the Excel window.

  • If someone is using OneDrive to sync files, they need to make sure it isn't paused. And they need the Use Office 2016 to sync files... setting turned on. Details on this setting can be found here.

  • Make sure those who are working in Excel for Android have AutoSave on. They can turn it on by tapping File > Gear button > AutoSave.

  • Make sure those who are working in Excel for iOS have AutoSave on. They can turn it on by tapping File File button > AutoSave.

  • Make sure the file isn't read-only.

  • On a Windows PC, open the file and go to File > Info. Resolve any errors that may be shown there.

This may happen occasionally if someone uses an Excel feature that isn't fully supported in Excel co-authoring yet. This can stop the co-authoring process temporarily. If you don’t have any unsaved changes, simply tap Refresh. If you have unsaved changes that you don’t need to keep, you can tap Discard changes. For stuff that you need to keep, tap Save a copy and save the file as a different name. Then, select and copy the changes you need to keep. Finally, one last step—reopen the original file that's on the cloud and paste your changes back in.

In general, the last change that is saved, either with the Save button or automatically with AutoSave, is the one that “wins.” There are some exceptions to this, but that’s generally how it works. If you don’t want to have conflicts with other people, assign areas or sheets to each person. You can explain these assignments when you send the link out, or you can make the assignments obvious in the workbook itself by putting people’s names in heading cells, or naming sheets with people’s names.

Keep in mind that if someone is using OneDrive to sync files, changes they make while their computer is offline won't get merged until their computer is online again. And once online, all their changes get merged at once.

Yes. In Excel for Android, tap File > History. Then tap a past version, and it will open. If you want to restore it to the current version, wait until everyone is no longer co-authoring, and then tap Restore this version.

To co-author in Excel for iOS, you need to make sure certain things are set up before you start. After that, it just takes a few steps to co-author with other people.

  • You need the latest version of Excel installed, and you need to sign in to Excel with a Microsoft account. When you open Excel, tap Open and make sure your Microsoft account is listed there. If it isn't, tap Add a place to add the account. Note that if you have a phone or tablet that's larger than 10.1 inches, you need to sign in with a Microsoft 365 subscription account.

  • You need to use .xlsx, .xlsm, or .xlsb files. If your file isn’t in this format, open the file in a desktop version of Excel. Then select File > Save As > Browse > Save as type and change the format to .xlsx, .xlsm, or .xlsb.

Co-authoring requires that you save a workbook to OneDrive, OneDrive for Business, or a SharePoint Online library. Note that SharePoint On-Premises sites (sites that are not hosted by Microsoft), do not support co-authoring. If you aren't sure which one you're using, ask the person in charge of your site, or your IT department.

  1. Create or open a file.

  2. If you created a file, tap File File button, tap Name, and then name the file. Then choose a OneDrive, OneDrive for Business, or SharePoint Online location on the left and tap Save.

  3. If you opened an existing file, tap File File button > Properties. If the Location path contains the words "OneDrive," "d.docs.live.net", or "SharePoint" then it's likely been saved to one of these locations already. If it doesn't have those words, tap File > Save a Copy and save it to OneDrive, OneDrive for Business, or SharePoint Online.

  1. Tap Share Share button in the upper-right.

  2. If you want to send the link to the file yourself, tap Copy Link > View and Edit. Then paste the link into an email message or IM window.

  3. If you want Excel to send the link for you in an email message, tap Invite People. Then type email addresses in the Invite people box and tap return after each address. Also make sure that Can edit is turned on. Finally, tap Send.

If you tapped Send in the previous step, people will receive an email message inviting them to open the file. They can select the link to open the workbook. A web browser will open the workbook in Excel for the web. They can co-author in Excel for the web right away by selecting Edit Workbook > Edit in Browser.

If they want to use an Excel app and not Excel for the web to co-author, they can select Edit Workbook > Edit in Excel. However, they'll need a version of the Excel app that supports co-authoring. Excel for Android, Excel for iOS, Excel Mobile, and Excel for Microsoft 365 are the versions that currently support co-authoring.

Now you can co-author the workbook at the same time as other people. To see who's editing the file with you, tap Share Share button while co-authoring in the upper-right, and then tap Shared With. If there are others working on the file at the same time as you, you'll see their name listed. If they have an Editing... label, they're working on the file.

Frequently asked questions

There are a handful of reasons why this error can occur. The most common one is because someone has opened the file with a version of Excel that doesn't support co-authoring. If just one person does this, then everyone else will get the "locked" error—even if everyone else is using a version of Excel that does support co-authoring.

Versions of Excel that support co-authoring:

  • Excel for Microsoft 365*

  • Excel for Microsoft 365 for Mac*

  • Excel for the web

  • Excel for Android

  • Excel for iOS

  • Excel Mobile

* Co-authoring in this version requires you to have the latest version of Excel installed, and requires you to sign in to a Microsoft 365 subscription account. Note that if you have a work or school account, you might not have a version that supports co-authoring yet. This might be because your administrator hasn’t provided the latest version to install.

If you're still getting the "locked" error, see Excel file is locked for editing for more solutions to this problem.

You can see other people's selections in different colors, but only if you and other people are using Excel for Microsoft 365, Excel for the web, Excel for Android, Excel Mobile, or Excel for iOS. In addition, if people are using Excel for Microsoft 365, then everyone needs to have AutoSave on to see colored selections.

If you're using Excel for Microsoft 365, Excel for the web, Excel for Android, or Excel for iOS and you don't see other people's selections, then wait a few seconds. If you still don't see someone's selections, make sure they're using Excel for Microsoft 365, Excel for the web, Excel for Android, or Excel for iOS. If they're using another version, like Excel Mobile, then their selections will not appear to you. However, any changes they make will show up almost instantly. In addition, if they're using an older version of Excel, then they won't be able to edit the file at the same time as you, and you won't be able to see their selections.

To co-author and see changes made by others, everyone needs to use a version of the Excel app that supports co-authoring. Excel for Android, Excel for iOS, Excel Mobile, and Excel for Microsoft 365 are the versions that currently support co-authoring. If they don't have a supported version, they can always use Excel for the web in their web browser by selecting Edit Workbook > Edit in Browser. If that doesn't solve the problem, try one or more of the following:

  • Wait a minute or two. Sometimes it takes some time for Excel and the cloud to communicate with each other.

  • Tell everyone to select the Enable Editing button if it appears.

  • Make sure everyone who's working in Excel for Microsoft 365 has AutoSave on in the upper-left corner of the Excel window.

  • If someone is using OneDrive to sync files, they need to make sure it isn't paused. And they need the Use Office 2016 to sync files... setting turned on. Details on this setting can be found here.

  • Make sure those who are working in Excel for Android have AutoSave on. They can turn it on by tapping File > Gear button > AutoSave.

  • Make sure those who are working in Excel for iOS have AutoSave on. They can turn it on by tapping File File button > AutoSave.

  • Make sure the file isn't read-only.

  • On a Windows PC, open the file and go to File > Info. Resolve any errors that may be shown there.

This may happen occasionally if someone uses an Excel feature that isn't fully supported in Excel co-authoring yet. This can stop the co-authoring process temporarily. If you don’t have any unsaved changes, simply tap Refresh. If you have unsaved changes that you don’t need to keep, you can tap Discard changes. For stuff that you need to keep, tap Save a copy and save the file as a different name. Then, select and copy the changes you need to keep. Finally, one last step—reopen the original file that's on the cloud and paste your changes back in.

In general, the last change that is saved, either with the Save button or automatically with AutoSave, is the one that “wins.” There are some exceptions to this, but that’s generally how it works. If you don’t want to have conflicts with other people, assign areas or sheets to each person. You can explain these assignments when you send the link out, or you can make the assignments obvious in the workbook itself by putting people’s names in heading cells, or naming sheets with people’s names.

Keep in mind that if someone is using OneDrive to sync files, changes they make while their computer is offline won't get merged until their computer is online again. And once online, all their changes get merged at once.

If you want to restore the file to a past version, wait until everyone is no longer co-authoring. Then tap File File button > Restore > View Version History Online. A web browser will open with the past versions of the file. If you're using OneDrive, tap a version on the left, and then tap Restore. If you're using OneDrive for Business or SharePoint Online, tap a version date and time, tap the down arrow, and then tap Restore. Then go back to Excel for iOS, and reopen the file.

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