Can't Activate Office Because Another User From My Organization is Already Signed in

Below is a list of things I have collected over time to try if you are getting the error message "Can't Activate Office Because Another User From My Organization is Already Signed in" or similar errors when you try to active Microsoft Office applications on a window PC. 

 

To clear out the "another account from your organization is already signed in" error and activate Office, follow these steps:

Quick Troubleshooting Steps

  1. Sign out of all Microsoft accounts on your device
  2. Clear Cached Credentials:
    • Open Control Panel
    • Go to Credential Manager
    • Delete Microsoft Office-related credentials
  3. Remove Specific Folders:
    • Delete %localappdata%/Microsoft/OneAuth
    • Delete %localappdata%/Microsoft/IdentityCache
  4. Check Work/School Accounts:
    • Settings > Accounts > Access work or school
    • Click account and select "Disconnect"
  5. Uninstall Support Tool:
  6. Reinstall Microsoft Office

Additional Troubleshooting

If initial steps fail:

Recommended: Restart Computer After Each Step

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