Additional features, settings, or issues not covered by specific Microsoft Teams categories
Hi TumMomen,
This might an temporary issue for users. You can simply let the affected users sign out Teams and sign in again to check the result. At the same time, to narrow down this problem, you can also educate users go to Teams web client (https://teams.microsoft.com/) to double confirm the situation.
If the problem persists, for our better analysis, would you like to share us an entire page with this prompt error message ?
We do appreciate your cooperation and kind patience.
Regards,
SD