PowerShell Missing After Windows Update – How to Fix
After installing a Windows update, you may find that PowerShell no longer appears in the Start me...
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View listFix Windows Activation Error 0x8007007b on Ubuntu
If you see Windows activation error 0x8007007b while using Ubuntu (for example, in a dual-boot se...
Troubleshoot 504 Gateway Timeout in Windows Security App
When you open Windows Security (formerly Windows Defender Security Center) and see a 504 ...
How to Unlock a File Locked by Windows Security
You try to open, move, or delete a file, but Windows shows a message like "This file is blocked b...
Command Prompt Service Unavailable: Troubleshooting Checklist
When you open Command Prompt and see 'Service unavailable' or 'The requested service is not avail...
Repair Windows Security Installation via Command Prompt
Windows Security (formerly Windows Defender) can sometimes fail to open, show blank screens, or r...
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