Resolve 502 Bad Gateway Using Command Line Tools
A 502 Bad Gateway error means a server acting as a gateway or proxy received an invalid response ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Update Password Login Loop
You try to install Windows updates, but the process keeps prompting for your password repeatedly,...
Fix "Command Prompt Module Not Found Permission Denied"
You type a command like python or npm in Command Prompt and get an erro...
Fix Windows Defender DNS Error Permission Denied
You run a scan or update in Windows Defender and see an error like "DNS error permission denied" ...
Fix Windows Terminal Proxy Authentication Failed
When Windows Terminal fails to connect through a corporate or personal proxy, you may see errors ...
How to Clear Windows Update Cache for Pending Installs
You see 'Pending install' in Windows Update but the download or install never finishes. Sometimes...
Topic paths
Quick titles
CMD vs PowerShell Speed: Which Is Faster?Chrome Profile Startup Checklist: Fix Common Boot IssuesFix Outlook Cache Folder Permission Denied ErrorOneDrive Folder Not Found TroubleshootingHow to Clear BitLocker Cache ManuallyHow to Fix MySQL Workbench Cannot Connect to LocalhostHow to Fix Chrome Profile Reset Not WorkingChrome Profile Connection Refused: Fix Checklist