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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View listFix PowerShell Assembly Cache Not Updating
You’ve updated a .NET assembly in the Global Assembly Cache (GAC) or copied a new DLL into a modu...
Fix Windows Security Backup Permission Denied Error
When you try to back up files using Windows Security (Windows Defender) or the built-in backup to...
How to Fix Task Scheduler Rate Limit Error
If you see a "rate limit" error in Task Scheduler, it usually means a task is trying to run too o...
Fix Windows Security Token Expired Error 0x80070520
You see error 0x80070520 with the message 'The security token has expired.' This usually happens ...
Fix Task Scheduler Connection Refused for Service Account
When a scheduled task runs under a service account and fails with a 'connection refused' error, i...
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