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

How to Enable Windows Defender Real-Time Protection via Group Policy

If Windows Defender real-time protection is turned off and grayed out, it's often because a G...

Checklist to Fix npm Permission Denied Errors

If you see "EACCES: permission denied" or "Error: EACCES, mkdir" when running npm...

Prevent Git Index Lock File Creation: Practical Fixes

If you see fatal: Unable to create 'path/to/.git/index.lock': File exists., ...

Fix Cloudflare 522 Error with Nginx Configuration

You're seeing a Cloudflare 522 error: connection timed out between Cloudflare and your origin...

Fix Git Push Rejected Non Fast Forward Error