Checklists for software errors, setup, and tool workflows.

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Fix Windows Defender Real-Time Protection Turning Off

If you see a notification that Windows Defender real-time protection is off, or it keeps turning ...

Fix Windows Update Authentication Failed / Permission Denied

When Windows Update fails with an "authentication failed" or "permission denied" message, it usua...

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 Activation Command Not Found or Permission Denied

When trying to activate Windows using the command line (slmgr.vbs or slui), you might see errors ...

Fix 'PowerShell Not Recognized as Internal or External Command'

When you type powershell in Command Prompt or a script and see 'powershell' is...

Fix Windows Terminal Offline Installer Not Working
You download the Windows Terminal offline installer (often a .msixbundle or .appxbundle file) fro...