
Fix Windows Defender Version Mismatch Sync Errors
You see a message that Windows Defender definitions are out of sync, or that the client and serve...
Software troubleshooting desk

You see a message that Windows Defender definitions are out of sync, or that the client and serve...

You open Outlook after a recent update and see “Service Unavailable” or “Cannot start Microsoft O...

After a Windows Defender scan, you may need to review the results to see what threats were found ...

After a Windows update, you might see a 404 error when trying to sync files in OneDrive. This usu...

When you open Command Prompt and see 'Service unavailable' or 'The requested service is unavailab...

You open Outlook and see an error: "Cannot connect to server" or "Disconnected"...