Forum Discussion

alexander_999's avatar
alexander_999
Copper Contributor
Sep 30, 2026

Unable to access Teams from a PC (only mobile access)

We have a user who can't access Teams on PC, but it works as usual on mobile (however, no connections to Outlook for Teams or the ability to create Teams meetings). Have tested several different PC’s...
Administrator
microsoft teams
Jamony's avatar
Jamony
MCT
Oct 07, 2026

Desktop and web show only guest organizations while mobile works, and AADSTS500571 identifies a disabled guest object in an external tenant. That explains failure to enter that guest tenant, but not why the home organization is missing, so treat them separately.

 

In the home tenant, confirm the user is enabled, the UPN is correct, and the Teams service plan is active. Review Entra sign-in logs for a desktop attempt and verify which tenant received it. Sign out of every Teams account, remove stale work or school accounts from Windows, restart, and sign in using only the home account. Test Teams in a private browser window.

 

The external tenant owner must re-enable or remove its disabled guest object. If the home tenant still does not appear, open Microsoft 365 support with the correlation ID, UTC timestamp, affected user, and home tenant ID.