How to Fix Cloudflare 521 Error During Setup
If you see a 521 error after setting up Cloudflare, it means your origin server refused the conne...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesVS Code Debugger Not Stopping at Breakpoints on Windows: Fixes
You set breakpoints in VS Code, start debugging, and the code runs right past them. This is a com...
Fix VS Code Source Control Not Detecting Changes on Ubuntu
If you're using VS Code on Ubuntu and the Source Control panel shows no changes even after ed...
Fix Error 0x80070080: Windows Update Reset Permissions
Error 0x80070080 (access denied) during Windows Update usually means the system lacks proper perm...
Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Fix Windows Security App Not Starting on Windows 11
You click the Windows Security icon or try to open it from Settings, but nothing happens. The app...
Issue queue
SitemapRecover from Detached HEAD in IntelliJ IDEA
Troubleshoot Windows Defender Real-Time Protection Stuck Off
Fix Cloudflare Full Strict SSL Errors After Update
Fix 0x800704ec Real-Time Protection Error
Fix VSCode Terminal Permission Denied in Python venv
How to Fix Windows Update Error 0x80070005 by Taking Ownership
Resolve Nginx File Permission Denied Error
How to Resolve Firefox Secure Connection Failed
Fix Windows Update Error 0x80070002 Using DISM
How to Fix Bluetooth Issues in Windows 11
Python Requests GET Timeout: A Practical How-To
Nginx Upstream Connection Refused: Causes and Fixes
Troubleshoot Windows Defender Real-Time Protection Stuck Off
Fix Cloudflare Full Strict SSL Errors After Update
Fix 0x800704ec Real-Time Protection Error
Fix VSCode Terminal Permission Denied in Python venv
How to Fix Windows Update Error 0x80070005 by Taking Ownership
Resolve Nginx File Permission Denied Error
How to Resolve Firefox Secure Connection Failed
Fix Windows Update Error 0x80070002 Using DISM
How to Fix Bluetooth Issues in Windows 11
Python Requests GET Timeout: A Practical How-To
Nginx Upstream Connection Refused: Causes and Fixes