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

Checklist for Fixing Command Prompt Startup Issues

If Command Prompt won't open, closes immediately, or shows an error on startup, the cause is ofte...

Fix Windows Defender Proxy Error Not Working

You launch Windows Defender Security Center or try to run a scan, and you see a proxy error—somet...

How to Fix Windows Update Module Not Found Error

If you see "Windows Update module not found" or a similar error when trying to update Windows, it...

PowerShell Command Not Found but Works in CMD

Fix SSH Host Key Verification Failed & Permission Denied

When you see Host key verification failed followed by Permission denied (publi...