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Repair Outlook Data Files (.pst and .ost) - Microsoft Support
If you cannot open your Outlook data file or suspect that the file is damaged, use the Inbox Repair tool (scanpst.exe) to repair errors in the file.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016
Use the System File Checker tool to repair missing or corrupted system ...
Swipe in from the right edge of the screen, and then tap Search.Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.Type Command Prompt in the Search box, right-click Command Prompt, and then click Run as administrator.If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
Download and install or reinstall Office 2019, Office 2016, or Office ...
Download and install or reinstall Office 2019, Office 2016, or Office 2013 - Microsoft Support. Office 2019 Office 2016 Office 2016 for Mac Office 2013. If this is the first time you're installing Microsoft 365 you may have some setup steps to do first. Expand the learn more section below.
Applies To: Office 2019, Office 2016, Office 2016 for Mac, Office 2013
Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
Select Install (or depending on your version, Install apps> ). From the home page select Install apps (If you set a different start page, go to aka.ms/office-install .) For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn/account. For Microsoft 365 Germany go to portal.office.de/account.
Applies To: Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Use the Office offline installer - Microsoft Support
Download the offline installer from your account portal. To download the offline installer, go to www.office.com. If you're not already signed in with the Microsoft account associated with your copy of Microsoft 365 or Microsoft 365 do that now.
Applies To: Office 2021, Office 2019, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Using System File Checker in Windows - Microsoft Support
Windows 11 Windows 10. System File Checker is a utility in Windows that checks for problems with files on your computer. To run it, follow these steps: Make sure you've installed the latest updates for Windows, and then restart your machine. To find out more, read Update Windows.
Download and install apps - Microsoft Support
Select Install apps. Follow the instructions in the browser to download the installer and start your installation. Tip. As your apps are installing you might see the User Account Control prompt pop up and ask Do you want to allow this app to make changes to your device? Select Yes. Close the installer window after it's finished.
Open .eml, .msg, and .oft files in Outlook - Microsoft Support
Right-click. From Windows Explorer right-click the .eml, .msg, or .oft file, select Open with >, and then select Outlook (new). Double-click. From Windows Explorer double-click the .eml, .msg, or .oft file. If the file doesn't open in new Outlook, it might not be set as the default app for these file types. To update this, see Change default ...
Applies To: New Outlook for Windows
Send large files with Outlook - Microsoft Support
Send large files by using file sharing, cloud services, or other solutions for working around file size limits in Outlook.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016
Send, view, and reply to encrypted messages in Outlook for PC
Send, view, and reply to encrypted messages in Outlook for PC - Microsoft Support. Outlook for Microsoft 365 Outlook 2021 Outlook 2019 Outlook 2016. A message that is encrypted by Microsoft 365 Message Encryption is delivered to a recipient’s inbox just like any other email message.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016