A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Please note that this is a user-to-user support forum. I'm not a Microsoft Support representative, so I don't have access to Microsoft's internal systems to investigate or confirm product behavior directly. I can only provide guidance based on publicly available documentation and community discussions.
Based on my research, I haven't found any official documentation confirming whether the "Update Add-in" prompt that remains stuck when accessing Insert > Forms while Office Store access is disabled is expected behavior or a product issue.
To better understand your situation, could you please confirm the following details?
-Which version and build of PowerPoint are you currently using?
-How was Office Store/Marketplace access disabled in your tenant? Was it through the Let users access the Office Store setting under Microsoft 365 admin center > Settings > Org settings > Services > User owned apps and services?
-Apart from the "Update Add-in" prompt, do you see any other error messages? For example, do you see the message "Office 365 has been configured to prevent individual acquisition and execution of Office Store Add-ins"?
I’m also trying to reproduce this in a test environment by disabling Office Store access and deploying Forms for PowerPoint through Integrated apps. The deployment is still in progress, so I haven’t been able to verify the behavior yet. I’ll share an update once I can complete the testing.
Thank you for your patience.