
Windows Defender Connection Refused: Troubleshooting Checklist
You open Windows Security and see "Connection refused" or "Something went wrong. Try reopening Wi...

You open Windows Security and see "Connection refused" or "Something went wrong. Try reopening Wi...

You open Chrome and notice extensions are grayed out or show a 'Cannot connect to extensions' err...

You see the error "Sync module not found" with code 0x8004de40 when trying to use OneDrive. This ...

You click 'Check for updates' and see 'Access Denied' or 'Error 0x80070005'. This usually means W...

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

You're working in Chrome and a browser extension stops working, showing an error code like ...