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 listFix 'Security Module Not Found' in Windows Defender
If you see a message in Windows Security that says something like "Security module not found" or ...
How to Fix 7-Zip 'Cannot Open File as Archive' Error on Valid Files
You double-click a file in 7-Zip and get "Cannot open file as archive." But you know the file is ...
How to Reinstall Windows Defender After Error 404
If you see a 404 error when trying to open Windows Defender, it usually means the app's files are...
Fix PowerShell 504 Gateway Timeout in IIS Configuration
When running PowerShell scripts that make HTTP requests through IIS, you may encounter a 504 Gate...
OpenVPN Unable to Connect to Remote Server: Fixes
You click Connect in OpenVPN, wait, and then see "Unable to connect to remote server." This is a ...
Topic paths
Quick titles
Windows Terminal Error Code 5 Fix GuideWindows Update Broke Command Prompt FixHow to Migrate Task Scheduler Jobs to a New ServerApache Service Won't Start on Windows – FixesWindows Search Authentication Failed Fix ChecklistHow to Run PowerShell Scripts on Mac (Using PowerShell Core)Restore Windows Defender and Internet After Service FailureFix BitLocker Stuck on Loading Screen