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magnetic_monopole's avatar
magnetic_monopole
Copper Contributor
Oct 25, 2026

Personal Account Fails Only on PCs with a Single Copilot App

I've spent several days investigating a personal-account switching issue across four Windows computers and have found a consistent pattern. Symptoms On some computers, when I attempt to switch from...
copilot chat
Jamony's avatar
Jamony
MCT
Nov 05, 2026

Your four-PC comparison is useful evidence, but the presence of a second app is still a correlation rather than a confirmed requirement. Microsoft's current Copilot update guidance describes switching between personal and work accounts within the updated app, with their data kept separate.

 

Compare the complete installed product names and versions on a working and failing PC; the shared Copilot label alone can obscure which application handles the account transition. Confirm that each installation has its available official updates.

 

Next, test the same personal Microsoft account in a private browser session. If that works while the desktop switch loops, preserve screenshots of the sequence and test the app's Repair option in Windows Settings, if available.

 

Report the paired working/failing configurations through Microsoft support, including versions 156 and 157 and the reopening behavior. Avoid presenting installation of a second app as a verified fix until that change has been tested independently.