This error indicates your IT admin has probably deleted or disabled your gadget in the Azure Active Directory.
But error 135011 can also be triggered by an unexpected app or server glitch.
The good news is that it affects only the desktop app.
You should be able to log into your account via the Teams web app without any problems.
Unplug your router, wait for 30 seconds, and plug the rig back in.
Meanwhile, kickstart your system.
If youre using a wireless connection, switch to a cable connection.
Try using a different data pipe, such as amobile hotspot, and peek if you notice any improvements.
Remove All Office Credentials
Try removing all the credentials related to Office.
If the error persists, unlink your work or school account.
Contact Your Admin
If the issue persists, maybe your admin has indeed disabled your gadget.
Contact your IT admin for further help.
Check the list of disabled devices.
pick the problematic machine, and then click onEnable.
If the gear was deleted, you better register it again.
Additionally, launch the Credential Manager, and remove all Office credentials.
If the issue persists, contact your admin and ask them to re-enable your equipment.