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

Fix Windows Explorer Restarting After Crash

If Windows Explorer (explorer.exe) crashes and then keeps restarting, you may see the desktop fla...

Windows Update Service Not Running in Windows 11: Fix It

If Windows Update won't start and you see an error like "Windows Update service is not ru...

Fix Python Permission Denied When Running pip install -r requirements.txt

Python Requests: Setting Timeout for POST Requests

When your Python script makes a POST request to an external API or web service, a slow or unrespo...

Nginx Upstream Connection Refused: Diagnosis and Fixes

When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...

Clear Windows Explorer Cache to Fix Restarting Issues

If Windows Explorer keeps restarting unexpectedly—your taskbar disappears and reappears, or your ...