How to Fix Cloudflare 521 Error with Firewall Settings
If you see a 521 Web Server Is Down error when visiting your site through Cloudf...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix ERR_CERT_AUTHORITY_INVALID on Localhost
When testing a local web app, you may see ERR_CERT_AUTHORITY_INVALID in Chrome or si...
Fix Windows Update Error 0x80070002 on Windows 10
When Windows Update fails with error 0x80070002, it usually means the system can't find the u...
Cloudflare Origin Certificate Troubleshooting Steps
If your website shows SSL errors or users see "This site can’t provide a secure connection,&#...
Fix npm install Permission Denied When Using nvm
If you see 'EACCES: permission denied' when running npm install while using ...
Fix 'pip externally managed environment' Error on Python 3.11
When you try to install a package with pip on Python 3.11 and see the error error: external...
Issue queue
SitemapChrome Black Screen After Hardware Acceleration Fix
Ubuntu 23.04 pip externally managed environment fix
Git Detached HEAD: Find and Restore Missing Changes
Fix Chrome Crash on Startup Due to Corrupt User Profile
Firefox SSL Error Only on WiFi: How to Fix
Nginx SSL Certificate Permission Denied Fix
Git Merge vs Rebase Conflicts: Key Differences and Fixes
Fixing Nginx Permission Denied for Root Directory
Check Node Version Compatibility Before Installing a Package
Fixing Python Memory Errors When Processing Large Files in Parts
Troubleshooting Chrome Web Store Extension Loading Issues
Fix Cloudflare Wildcard Subdomain Not Resolving
Ubuntu 23.04 pip externally managed environment fix
Git Detached HEAD: Find and Restore Missing Changes
Fix Chrome Crash on Startup Due to Corrupt User Profile
Firefox SSL Error Only on WiFi: How to Fix
Nginx SSL Certificate Permission Denied Fix
Git Merge vs Rebase Conflicts: Key Differences and Fixes
Fixing Nginx Permission Denied for Root Directory
Check Node Version Compatibility Before Installing a Package
Fixing Python Memory Errors When Processing Large Files in Parts
Troubleshooting Chrome Web Store Extension Loading Issues
Fix Cloudflare Wildcard Subdomain Not Resolving