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...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesHow to Fix Nginx Configuration Test Failed Error
When you run nginx -t and see "test failed", it means nginx found a problem ...
Fix Cloudflare Origin Certificate Not Trusted by Browser
You've set up Cloudflare with an origin certificate, but browsers show a warning that the cer...
Fix Cloudflare Wildcard Subdomain Not Working
If you've set up a wildcard DNS record in Cloudflare (e.g., *.example.com) but s...
Fix Windows Explorer Keeps Restarting in Safe Mode
If you boot into Safe Mode only to see Windows Explorer crash and restart over and over, the prob...
How to Fix Nginx Upstream Connection Refused on Port 80
When nginx logs show "upstream connection refused" while connecting to port 80, it means ...
Issue queue
SitemapPython MemoryError Large File Solutions
How to Diagnose and Fix Chrome Memory Leaks
Chrome Extensions Not Loading from Web Store? Here's How to Fix
Driver Update Causing Blue Screen in Windows 11
VSCode IntelliSense Not Working for JavaScript: Fixes
Solving 'Fatal: Remote Origin Already Exists' in Git
How to Avoid Hanging Requests in Python
Git Allow Unrelated Histories Explained
Git Merge Unrelated Histories Without Losing Commits
Python Venv Activation Not Working: Step-by-Step Fix
Docker Container Exits on Startup: Logs and Fixes
How to Resolve Docker Volume Permission Denied on chown
How to Diagnose and Fix Chrome Memory Leaks
Chrome Extensions Not Loading from Web Store? Here's How to Fix
Driver Update Causing Blue Screen in Windows 11
VSCode IntelliSense Not Working for JavaScript: Fixes
Solving 'Fatal: Remote Origin Already Exists' in Git
How to Avoid Hanging Requests in Python
Git Allow Unrelated Histories Explained
Git Merge Unrelated Histories Without Losing Commits
Python Venv Activation Not Working: Step-by-Step Fix
Docker Container Exits on Startup: Logs and Fixes
How to Resolve Docker Volume Permission Denied on chown