How to Kill a Process Using a Port in Command Prompt
When you try to start a local server or application and see an error like "port already in use" o...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listWindows Update 502 Bad Gateway: Step-by-Step Fix
When you run Windows Update and see a 502 Bad Gateway error, it usually means th...
Setup OneDrive to Ignore SSL Certificate Errors
If you're using OneDrive with a corporate proxy or internal server that uses a self-signed or exp...
Fix Chrome Proxy Authentication Failed Errors
When Chrome shows 'proxy authentication failed' or 'ERR_PROXY_AUTHENTICATION_FAILED', it usually ...
PowerShell 502 Bad Gateway: A Troubleshooting Checklist
When a PowerShell script or command returns a 502 Bad Gateway error, it usually means the web ser...
Check if a Port Is Already Allocated Using Command Prompt
When you start a service or application and get an error like "Address already in use" or "Port i...
Topic paths
Quick titles
How to Fix 'Not Recognized' in Windows TerminalWindows Defender Update Fails with 0x80240016How to Fix Microsoft Store Installation ErrorsFix Windows Defender Service Not Starting with Permission DeniedHow to Resolve Windows Defender SSL Sync ErrorResolve Windows Update Version Mismatch ErrorsTeams Log File Paths and How to Read ThemWindows Defender Scanning Despite Real-Time Protection Off