Fix Nginx Upstream Connection Refused Socket Error
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 notesFix Windows Defender Blocked by Third-Party Antivirus
You open Windows Security and see a yellow warning: "Real-time protection is off. Your device...
Git Merge Unrelated Histories Without Losing Commits
You've cloned a repo, added a new remote, and now you need to merge two branches that don'...
How to Use a Cloudflare DNS Propagation Checker Tool
After you change a DNS record in Cloudflare, it takes time for the update to spread across the in...
How to Fix Chrome Startup Crash by Disabling Extensions
If Chrome crashes as soon as you open it, a misbehaving extension is often the culprit. Extension...
How to Fix Git Authentication Failed in VS Code
You're in VS Code, push or pull fails with "Authentication failed"—this is common and...
Issue queue
SitemapChrome Black Screen Fix for Remote Sessions
Docker Compose Environment Variable Not Set in Container: Fixes
Chrome Black Screen on Startup: Hardware Acceleration Fix
Fix ERR_CONNECTION_RESET in Chrome: Step-by-Step
Fix Node Sass Build Failed: Sass Not Found
Chrome Profile Sync Troubleshooting Guide
Fixing Windows Update Error 0x80070005 and SFC Scan Issues
Ubuntu Docker Disk Space Full Error Fix
Fix DNS Probe Finished NXDOMAIN: Chrome Flags Reset Guide
Fix Windows Update Error 0x80070002 by Resetting SoftwareDistribution Folder
How to Restore Python After Windows Update
How to Fix Node Sass Build Failure
Docker Compose Environment Variable Not Set in Container: Fixes
Chrome Black Screen on Startup: Hardware Acceleration Fix
Fix ERR_CONNECTION_RESET in Chrome: Step-by-Step
Fix Node Sass Build Failed: Sass Not Found
Chrome Profile Sync Troubleshooting Guide
Fixing Windows Update Error 0x80070005 and SFC Scan Issues
Ubuntu Docker Disk Space Full Error Fix
Fix DNS Probe Finished NXDOMAIN: Chrome Flags Reset Guide
Fix Windows Update Error 0x80070002 by Resetting SoftwareDistribution Folder
How to Restore Python After Windows Update
How to Fix Node Sass Build Failure