Knowledge base for software setup, errors, and daily tool work.

Reset Windows Security App Without Losing Data

If the Windows Security app is crashing, not opening, or showing errors, resetting it can often f...

Fix Laravel Artisan Command Not Found on Ubuntu

Fix Windows Security 404 Not Found on Startup

When Windows Security shows a 404 error on startup, it typically means the app can't find its req...

Fix Windows Defender File Locked During Scan

You run a Windows Defender scan and it reports that a file is locked and can't be scanned. This i...

How to Clear Windows Defender Cache

If Windows Defender (Microsoft Defender Antivirus) is acting up—stuck on an old update, using hig...

Fix Token Expired Error in Windows Command Prompt

If you see a "token expired" error in Windows Command Prompt while using Azure CLI, PowerShell, o...