Windows Defender Authentication Failed: Step-by-Step Checklist
You open Windows Security and see 'Authentication failed' when trying to use Windows Defender. Th...
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1. Reproduce
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View listFix PowerShell 504 Gateway Timeout Error
You run a PowerShell script that calls a web API, and after a while you get a 504 Gateway...
Fix Windows Defender Rate Limit Errors After Update
If you see a rate limit error in Windows Defender after a recent update, it usually means the rea...
Fix OneDrive Sync Login Loop on Windows 10
If you're stuck in a OneDrive login loop on Windows 10—where the sign-in screen keeps reappearing...
How to Run Windows Security on a Mac
If you need to run Windows Security (formerly Windows Defender) on a Mac, you're likely trying to...
How to Fix BitLocker Sync Issues with Active Directory
You might see a BitLocker recovery key not backing up to Active Directory, or a status of "Backup...
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