Cloudflare SSL Full vs Flexible: Troubleshooting Mixed Content & Errors
If your site shows broken padlocks, mixed content warnings, or SSL errors after changing Cloudfla...
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 521 Error (Port 443 Blocked)
When you see a Cloudflare 521 error, it means Cloudflare’s servers cannot connect to your origin ...
How to Fix Windows Explorer Keeps Restarting
If Windows Explorer (the desktop, taskbar, and file manager) keeps restarting, you'll see the...
Docker Nginx 502 Bad Gateway: Memory Limit Fix
You're running Nginx in Docker as a reverse proxy, and suddenly you see 502 Bad Gateway error...
Fix Nginx 'upstream connection refused' When Talking to PHP-FPM
You're seeing upstream connection refused in your Nginx error log, and your site...
Docker Compose Port Already Allocated: Checklist
You run docker-compose up and get an error like Error starting userland proxy:...
Issue queue
SitemapDocker Container Stops Immediately: Exit Code 0
Fix 'Permission Denied' in VS Code Terminal on Mac
Git Merge Conflict: Handling Deleted Files
Fix Node Version Mismatch in Your Project
Fix VS Code Breakpoints Not Working in SSH/Container
Nginx Static File Permission Error Troubleshooting
Troubleshooting Nginx Upstream Connection Refused Port 80
Docker Desktop Permission Denied on Startup Fix
Docker Disk Full: Using system df to Diagnose
How to Fix ERR_NAME_NOT_RESOLVED in Chrome
Fixing Windows Update Error 0x80070005 and SFC Scan Issues
Chrome Won't Open? Silent Crash on Startup Guide
Fix 'Permission Denied' in VS Code Terminal on Mac
Git Merge Conflict: Handling Deleted Files
Fix Node Version Mismatch in Your Project
Fix VS Code Breakpoints Not Working in SSH/Container
Nginx Static File Permission Error Troubleshooting
Troubleshooting Nginx Upstream Connection Refused Port 80
Docker Desktop Permission Denied on Startup Fix
Docker Disk Full: Using system df to Diagnose
How to Fix ERR_NAME_NOT_RESOLVED in Chrome
Fixing Windows Update Error 0x80070005 and SFC Scan Issues
Chrome Won't Open? Silent Crash on Startup Guide