How to Free Up a Port in Command Prompt (Windows)
When an application fails to start because a port is already in use, you need to free that port. ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Outlook Auto Start Not Working After Update
After a recent Windows or Office update, you may find that Outlook no longer opens automatically ...
Fix Windows Activation Update Error 0x80073712
If you see error 0x80073712 when trying to activate Windows or install updates, it usually means ...
Command Prompt 504 Gateway Timeout Troubleshooting Checklist
If you're getting a 504 Gateway Timeout error while browsing or using a web service, it usually m...
Windows Activation Permission Denied: Troubleshooting Checklist
You're trying to activate Windows, but you get a "permission denied" or "access denied" error. Th...
Microsoft Store High CPU Usage: Troubleshooting Checklist
You open Task Manager and see Microsoft Store eating 20-30% CPU, fan spinning up, system sluggish...
Topic paths
Quick titles
Microsoft Teams Cannot Connect? Try These FixesFix Chrome Profile Loading Loop: Step-by-Step GuideChrome Browser Path Not Found on Mac: FixesWindows Defender Full Scan Hangs at 99% – FixFix 'Git Remote Repository Not Found' ErrorFix Windows Search Offline Installer Missing Files ErrorResolve DNS_PROBE_FINISHED_NXDOMAIN for All WebsitesFix Chrome Update Configuration Error Registry Issue