
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...

If the Microsoft Store won't open, shows blank pages, or gets stuck on downloads, a corrupted cac...

You open Windows Security and see an error: "Module not found" or "Windows Defender module not fo...

If you're running Windows on a Mac via Boot Camp or a virtual machine and Windows Defender won't ...

When enabling or managing BitLocker, a '502 Bad Gateway' error can appear in the management conso...

If your PC feels sluggish and Task Manager shows Windows Security (or Antimalware Service Executa...