We are having some issues with installing certain Teams apps and it may just be that I don't understand some things.
In particular, we would like to install App Studio.
Here is the scenario:
Under Org-wide app settings in Teams we have Allow third-party app set to Off.
Under Manage apps I see App Studio in the list of apps and the publisher say Microsoft. Status says "Blocked org-wide". If I highlight it and click Allow I get a popup that says "Allow application? You are allowing this app to be available for users in the Teams app store. However, it won't be available to them if they have a blocking app permission policy." When I click Allow the status does not change and the message across the top of the screen says "All third-party apps are currently blocked. To allow any third-party apps, enable 'Allow third-party apps' in the Org-wide settings".
We also tried enabling third-party apps and in Permission polices setting third-party apps to "Allow specific apps and block all others". We then added App Studio but after doing that we noticed that a lot of other third-party apps were being allowed. So we turned that back off.
So my questions are:
1. Why is App Studio be treated as a third-party app when the publisher is Microsoft?
2. How do you allow one third-party app without then allowing a bunch of others?
Thanks a lot.