How to Fix Git 'index.lock' File Exists Error
When you see fatal: Unable to create 'path/.git/index.lock': File exists., G...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Docker Nginx 502 Bad Gateway Upstream Error
When running Nginx as a reverse proxy in Docker, a 502 Bad Gateway error with 'upstream' ...
npm package.json Not Found: Troubleshooting Checklist
When you run npm install or npm start and see package.json not fo...
Fix Edge Sync Not Working After Update
After a browser update, you might find that bookmarks, passwords, or other settings no longer syn...
Fix Git SSL Certificate Problem on macOS: Unable to Get Local Issuer
If you're seeing fatal: unable to access 'https://...': SSL certificate problem...
Git Detached HEAD vs Attached HEAD: What It Means and How to Fix
If you've seen the message "You are in 'detached HEAD' state" while using Git...
Issue queue
SitemapHow to Recover Pruned Docker Networks
Fix Nginx Permission Denied for SSL Certificate Files
Resolve 'Unable to Get Local Issuer' in Git on Ubuntu
Cloudflare 522 Error: Analyzing Server Logs for a Fix
Nginx Upstream Connection Refused in Docker: How to Fix
Cloudflare SSL Full Strict Troubleshooting Steps
Docker Pull Access Denied Error Windows 10 Guide
Windows Update Service Error 1053 Fix Guide
Resolve npm install ENOENT: Step-by-Step Guide
Windows 11 WiFi No Internet – Proxy Fix
Fix Port Already in Use Error in Docker Compose
How to Disable IPv6 on Windows 11 to Fix No Internet
Fix Nginx Permission Denied for SSL Certificate Files
Resolve 'Unable to Get Local Issuer' in Git on Ubuntu
Cloudflare 522 Error: Analyzing Server Logs for a Fix
Nginx Upstream Connection Refused in Docker: How to Fix
Cloudflare SSL Full Strict Troubleshooting Steps
Docker Pull Access Denied Error Windows 10 Guide
Windows Update Service Error 1053 Fix Guide
Resolve npm install ENOENT: Step-by-Step Guide
Windows 11 WiFi No Internet – Proxy Fix
Fix Port Already in Use Error in Docker Compose
How to Disable IPv6 on Windows 11 to Fix No Internet