Fixing Nginx Upstream Connection Refused on Port 443
You see "upstream connection refused" in your Nginx error log when proxying requests to p...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listChecklist for Nginx Configuration Test Failure
When you run nginx -t and get a failure, the server won't reload or restart. Thi...
Fix Git Authentication Failed in VS Code on Linux
You're working in VS Code on Linux, try to push or pull, and get a popup: "Git authentica...
Fix VS Code Git Not Detecting Changes After .gitignore Update
After updating your .gitignore file, you might notice that VS Code's Git extensi...
Fix Missing Edge Sync Option in Settings
You open Edge settings to turn on sync, but the sync option is gone. This usually happens after a...
How to Fix Cloudflare 522 Error (Firewall Blocking)
If you see a Cloudflare 522 error, the connection between Cloudflare and your origin server timed...
Topic paths
Quick titles
Fix Docker Compose PostgreSQL Port Already in UseHow to Increase Node.js Memory Limit for npm ScriptsFix 'Git Remote Origin Already Exists' When Updating Remote URLTroubleshooting Edge Tab Sync IssuesFix Python Requests Hanging with TimeoutFix Node.js Heap Out of Memory: Practical StepsHow to Reset Windows Search Index (Step by Step)Handling Git Merge Conflicts in Lockfiles