
Fix Windows Defender Connection Refused or Permission Denied Errors
If you see "connection refused" or "permission denied" when trying to start or update Windows Def...
Software troubleshooting desk

If you see "connection refused" or "permission denied" when trying to start or update Windows Def...

You open OneDrive and see "Sync pending" or "Changes not syncing" with no error code. Often the c...

You open PowerShell, run a command to connect to Office 365, and get an error: "Cannot connect to...

After a Windows update, you might notice that Search takes longer to return results or seems unre...

When BitLocker reports a 'connection refused' error during sync, it usually means the client cann...

After a recent Windows update, some users see a 504 Gateway Timeout error when running PowerShell...