Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
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 Cloudflare 522 Errors: Connection Timeout Guide
You're trying to load your site and see Error 522: Connection Timed Out. Thi...
Cloudflare SSL Full Strict Error 525 Fixes
If you see Error 525: SSL handshake failed when using Cloudflare with SSL set to...
Fix Chrome Black Screen After Disabling Hardware Acceleration
If Chrome shows a black screen after you turn off hardware acceleration, you're not alone. Th...
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...
Fix Node Sass Build Failure Due to Node Version Mismatch
You run npm install and see an error like Node Sass does not yet support your ...
Issue queue
SitemapAntivirus Causing ERR_NAME_NOT_RESOLVED – Solutions
How to Fix 'Git Remote Origin Already Exists'
Python UnicodeDecodeError: Quick Fixes for File Encoding Issues
Python Memory Error Fix: Chunking Large Files Correctly
Windows 11 Update Stuck at 0% Service Not Running Fix
Windows 11 Assistant Stuck: Disk Space Troubleshooting
How to Handle Python UnicodeDecodeError with errors='ignore'
VS Code IntelliSense Not Working for Java: Fix Guide
DNS_PROBE_FINISHED_NXDOMAIN: ipconfig flushdns Not Working
How to Restart Bluetooth Service in Windows 11
Cloudflare 522 Timeout Error Fix Guide
How to Fix Windows Update Error 0x800f081f
How to Fix 'Git Remote Origin Already Exists'
Python UnicodeDecodeError: Quick Fixes for File Encoding Issues
Python Memory Error Fix: Chunking Large Files Correctly
Windows 11 Update Stuck at 0% Service Not Running Fix
Windows 11 Assistant Stuck: Disk Space Troubleshooting
How to Handle Python UnicodeDecodeError with errors='ignore'
VS Code IntelliSense Not Working for Java: Fix Guide
DNS_PROBE_FINISHED_NXDOMAIN: ipconfig flushdns Not Working
How to Restart Bluetooth Service in Windows 11
Cloudflare 522 Timeout Error Fix Guide
How to Fix Windows Update Error 0x800f081f