View, manage, and install add-ins for Microsoft 365 programs

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

1. Click File > Get Add-ins.
   
   Alternatively, you can click 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. Click File > Get Add-ins.

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

3. Click 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. Click 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 click 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. Click 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, click Refresh to reload your add-ins.

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

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. Click Add-ins and then click More Add-ins >My Add-ins tab to view your existing add-ins.

   

3. Click the app you want to cancel and click Manage My Add-ins.

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

5. Click 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