How to Reinstall Windows Defender in Windows 10
Windows Defender (now called Microsoft Defender Antivirus) is built into Windows 10 and typically...
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BrowseFix Windows Defender Service Authentication Failed Error
You might see the error 'Windows Defender service authentication failed' when trying to open Wind...
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Fix Windows Defender Path Not Found Error 0x80070643
When you try to update or run Windows Defender, you might see error 0x80070643 with a message lik...
How to Clear Windows Defender Cache
If Windows Defender (Microsoft Defender Antivirus) is acting up—stuck on an old update, using hig...
Fix Windows Backup and Restore Permission Denied Error
You try to run Windows Backup and Restore, but get a "permission denied" error. This usually mean...
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