Checklist for Debugging 502 Bad Gateway in Command Prompt
You're working on a web app or API, and you get a 502 Bad Gateway error. The browser just says '5...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Microsoft Teams Service Unavailable on Windows 10
Users running Microsoft Teams on Windows 10 sometimes see the error 'Service Unavailable' when tr...
Fix OneDrive File Locked by Office Document Sync Issue
You open an Office file from OneDrive and see an error that the file is locked or in use by anoth...
Fix 'Command Not Found' in Ubuntu WSL Terminal
When you open Windows Terminal and run a command in Ubuntu WSL but get 'command not found', it's ...
How to Fix Windows Update Not Downloading New Updates
You click "Check for updates" in Windows Update, but nothing happens—or the download hangs at 0%....
Fix Chrome Offline Installer Stuck at Extracting Files
You download the Chrome offline installer, run it, and it sits at "Extracting files…" for minutes...
Topic paths
Quick titles
OneDrive Sync Error 504 Troubleshooting GuideResolve PowerShell Access Denied IssuesWindows Update Stuck at 100%? Here's the FixAndroid Chrome Crashing Fix GuideChrome Profile Timeout Error: Quick FixesFix PowerShell Execution Policy Restricted in VS CodeTroubleshooting Microsoft Teams Dependency ConflictWindows Activation After Hardware Swap – Settings Guide