Fix Windows Search Authentication Failed Error 0x80070005
When Windows Search fails with error code 0x80070005 and an "authentication failed" message, it u...
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View listFix Windows Defender Error 0x800106ba: Failed to Start
If you see “Windows Defender failed to start” with error code 0x800106ba, the Windows Defender se...
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...
Fix Windows Security Service Unavailable in Windows 11
You open Windows Security and see a red banner: 'Security service unavailable. Restart your devic...
Windows Security Invalid Configuration Checklist
You open Windows Security and see a message about an invalid configuration. This usually means a ...
Fix Windows Security High CPU Usage After Update
After a Windows update, you might notice the Windows Security process (Antimalware Service Execut...
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