
I have been using multiple PowerApps for the past year within Teams without issue. Suddenly, without any change to the PowerApps themselves, multiple PowerApps suddenly stopped working in Teams . The PowerApps still load and work fine on the website version. However, in Teams, they load the PowerApp, but fail to connect to the underlying Sharepoint lists -- so the underlying data is blank. This is true for multiple different Sharepoint lists, which have not changed. The issue is also occurring across multiple different users, and multiple different computers.
In summary, the issue is suddenly occurring across multiple PowerApps, across multiple different Sharepoint lists, across multiple computers and across multiple different users... so it seems highly specific to some change in the Teams environment. I imagine it is a permissions issue, but I do not see a place to resolve this. What has Microsoft changed within PowerApps or Sharepoint or Teams permission settings in the past 3 days? And how can I fix this?