View, manage, and install add-ins for Excel, PowerPoint, and Word

To disable or remove an add-in follow these steps:

1. Select File > Get Add-ins.
   
   Alternatively, you can select Home > Add-ins.

2. You can directly install add-ins from this page or select More Add-ins to explore.

3. In the Office Add-ins dialog, select My Add-ins tab.

4. Select an add-in you want to remove and right click to select Remove option.

You can see and change add-in settings in the Trust Center, descriptions of which are in the following section. Add-in security settings may have been determined by your organization so not all options may be available to change.

1. Select File > Get Add-ins.

2. Select More Add-ins>Manage My Add-ins.

3. Select Trust Center > Trust Center Settings > Add-ins.

4. Check or uncheck the boxes you want.

• Require Application Add-ins to be signed by Trusted Publisher     Check this box to have the Trust Center check that the add-in uses a publisher's trusted signature. If the publisher's signature hasn’t been trusted, the Microsoft 365 program doesn’t load the add-in, and the Trust Bar displays a notification that the add-in has been disabled.

• Disable notification for unsigned add-ins (code will remain disabled)     When you check the Require Application Extensions to be signed by Trusted Publisher box, this option is no longer grayed out. Add-ins signed by a trusted publisher are enabled, but unsigned add-ins are disabled.

• Disable all Application Add-ins (may impair functionality)     Check this box if you don't trust any add-ins. All add-ins are disabled without any notification, and the other add-in boxes are grayed out.

While working with add-ins, you may need to learn more about digital signatures and certificates, which authenticate an add-in, and trusted publishers, the software developers who often create add-ins.

Use the following instruction to manage and install add-ins.

To install a new add-in:

1. Select File > Get Add-ins.
   
   Alternatively, in Word, Excel and PowerPoint you can view your add-ins by selecting Home > Add-ins.
   
   

2. You can directly install popular add-ins on the page or go to More Add-ins to explore. 

3. Select the add-in and select Add.
   
   Or browse by selecting Store tab in the Office add-in dialog to find other add-ins to install and select Add for that add-in.

To manage your add-ins:

1. Select File > Get Add-ins and from the bottom, select More Add-ins. 
   
   Or select Home > Add-ins > More add-ins.

2. In the Office dialog, select My Add-ins tab. If you are not able to see your add-ins, select Refresh to reload your add-ins.

3. Select Manage My Add-in to manage and select Upload to browse and add an add-in from your device.

When an installed add-in requires access to your device capabilities, such as your camera, geolocation, or microphone, you’ll be shown a dialog with the option to Allow, Allow Once, or Deny permission. 

• If you select Allow, the add-in will have access to the requested device capabilities. The permission you grant persists until you uninstall the add-in or until you clear the cache of the browser where the add-in is running. 

• If you select Allow Once, the add-in will have access to the requested device capabilities until the browser tab or window in which it’s running is closed. 

• If you select Deny, the add-in won't be able to access the requested device capabilities. The next time the add-in requires access, you’ll be shown a dialog requesting your permission. 

If you want to change an add-in's access to your device capabilities after selecting Allow, you must first uninstall the add-in or clear your browser cache.

If you've subscribed to an add-in through the Microsoft 365 Store that you don't want to continue, you can cancel that subscription.

1. Open the Microsoft 365 application and go to the Home tab of the ribbon.

2. Select Add-ins and then select More Add-ins >My Add-ins tab to view your existing add-ins.

   

3. Select the app you want to cancel and select Manage My Add-ins.

4. Under the Payment and Billing section choose Cancel Subscription.

5. Select OK and then Continue.

Once that's complete you should see a message that says "You have cancelled your app subscription" in the comments field of your apps list.

Some add-ins might not be compatible with your organization's IT department policies. If that is the case with add-ins recently installed on your Microsoft 365 program, Data Execution Prevention (DEP) will disable the add-in and the program might crash.

Learn more about DEP