
Windows Security Version Mismatch: Troubleshooting Checklist
If you see an error message saying Windows Security has a version mismatch, or the Security Cente...
Software troubleshooting desk

If you see an error message saying Windows Security has a version mismatch, or the Security Cente...

After a Windows update, BitLocker may prompt for a recovery key, fail to unlock, or show error me...

You type a query into the Start menu or File Explorer search box, but no results appear—or only p...

You open Windows Search, type a query, and instead of results see a 502 Bad Gateway error. This u...

When you see 'Outlook command not found' or 'The command line argument is not valid' on startup, ...

You open Chrome on Windows 10 and notice some extensions aren't working—no icon, no functionality...