Hi everyone,
I created a PowerApp in order to interact with guest users (who are already in the company's Azure AD tenant), but they are unable to connect to sharepoint at the first Sign in, even though they have a PowerApps plan and all sharepoint permissions they need. Everytime they try to sign in, they are asked to fix the sharepoint connection, because their Login credentials are displayed as {username}{token} (s. Image A) and if they try to fix it, they get messages like this:
"An error occurred during authentication.
Session ID: d6dfbd00-721a-474b-a048-d3c40e18de5f" (s. Image B)
It seems to me that there have already been similar cases with this problem:
https://powerusers.microsoft.com/t5/Building-Power-Apps/quot-An-error-occurred-during-authentication...
https://powerusers.microsoft.com/t5/General-Discussion/Sign-in-Issues-Sharepoint-list-form-doesn-t-a...
https://powerusers.microsoft.com/t5/General-Discussion/Problems-sharing-app/m-p/193639#M63040
Do you have any suggestions on that?
Thank you!
PS: If you wan't to investigate further, you can take the Session ID from above to look at.
