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 notesHow to Fix ERR_CONNECTION_RESET in Chrome
You're browsing and suddenly Chrome shows ERR_CONNECTION_RESET – the connect...
Fix VS Code 'Permission Denied' When Saving Files
You're editing a file in Visual Studio Code, hit Ctrl+S, and get an error: "Failed to sav...
VS Code Terminal Not Opening with SSH: Fixes
You connect to a remote server via SSH in VS Code, but the integrated terminal stays blank or nev...
Fix Docker Desktop Engine Stopped After Sleep Mode
You wake your computer from sleep, open Docker Desktop, and see the engine is stopped. The whale ...
Fix PowerShell Execution Policy Restricted in VS Code
When you try to run a PowerShell script in the Visual Studio Code integrated terminal and see an ...
Issue queue
SitemapTroubleshooting Windows Shared Folder Access with Password Protected Sharing
Fix npm ERR! enoent ENOENT: package.json Not Found on Linux
Fix 'Windows Cannot Access Shared Folder' After Update
Fix Node Version Errors When Installing Packages
Cloudflare Origin Certificate Not Showing in Dashboard: Fix
Docker Postgres Volume Permission Denied Fix
Troubleshoot Firefox Secure Connection Warnings
Edge Sync Error 0x80070424 Troubleshooting Guide
How to Fix Git Authentication Failed in VS Code
Fix pnpm ERR_PNPM_NO_OFFLINE_META: Step-by-Step Guide
Fix Windows Update Error 0x80070002 Due to Low Disk Space
Resolve Python Dependency Conflicts in Virtualenv
Fix npm ERR! enoent ENOENT: package.json Not Found on Linux
Fix 'Windows Cannot Access Shared Folder' After Update
Fix Node Version Errors When Installing Packages
Cloudflare Origin Certificate Not Showing in Dashboard: Fix
Docker Postgres Volume Permission Denied Fix
Troubleshoot Firefox Secure Connection Warnings
Edge Sync Error 0x80070424 Troubleshooting Guide
How to Fix Git Authentication Failed in VS Code
Fix pnpm ERR_PNPM_NO_OFFLINE_META: Step-by-Step Guide
Fix Windows Update Error 0x80070002 Due to Low Disk Space
Resolve Python Dependency Conflicts in Virtualenv