Editing Troubleshooting Outlook Add in (section)

=== Outlook Add-in Button Graying Out ===

If the add-in button appears grayed out when switching between inboxes, this may be due to several reasons:

- The admin might have enabled access to the Microsoft Store and installation of Add-ins but not permitted the use of optional connected experiences. Refer to the article on how to [Check Optional Connected Experiences Enabled](https://support.microsoft.com/en-us/office/encrypt-email-messages-373339cb-bf1a-4509-b296-802a39d801dc?ui=en-us&rs=en-us&ad=us).
- The reading pane for the specific inbox may be disabled. Instructions on how to [Enable the Reading Pane](https://support.microsoft.com/en-us/office/use-and-configure-the-reading-pane-to-preview-messages-2fd687ed-7fc4-4ae3-8eab-9f9b8c6d53f0?ui=en-us&rs=en-us&ad=us) can be found here.
- If your emails are encrypted, the Add-in will not function properly with these messages. Confirm if email encryption is applied by consulting your IT team.

If these steps do not resolve the issue, contact Microsoft support regarding your Office365 configuration.