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

Fix ERR_CONNECTION_RESET in Chrome on Windows 10

If you see ERR_CONNECTION_RESET in Chrome on Windows 10, it means the TCP connec...

Fix DNS Probe Finished NXDOMAIN on Custom DNS Server

If you see “DNS PROBE FINISHED NXDOMAIN” in Chrome or another browser while using a custom DNS se...

How to Fix Cloudflare Error 521: Web Server Is Down

Cloudflare error 521 means your origin web server is refusing the connection from Cloudflare'...

Git Merge Conflict Resolution Tool Setup Guide

When you encounter a merge conflict in Git, the default conflict markers (<<<<<<...

Fix Cloudflare Wildcard Subdomain Not Working

If you've set up a wildcard DNS record in Cloudflare (e.g., *.example.com) but s...

Git Push Rejected Non Fast Forward: Troubleshooting Checklist