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 listHow to Fix Command Prompt Error 0xc0000142 on Windows 10
When you try to open Command Prompt (cmd.exe) on Windows 10, you might see an error: "The applica...
Fix Windows Update Path Not Found Error in Windows 10
When you try to run Windows Update in Windows 10 and see an error like "The path specified cannot...
Fix OneDrive Sync DNS Errors After Network Change
After changing networks—switching from home to office Wi-Fi, using a VPN, or reconfiguring your r...
Fix Windows Defender Invalid Configuration Error
You may see an error like “Invalid configuration” when opening Windows Defender or trying to run ...
Fix Command Prompt Sync Issues After Windows Update
After a Windows Update, you might notice that Command Prompt no longer syncs settings, such as wi...
Topic paths
Quick titles
Windows Terminal Update Error 0x80070002 TroubleshootingHow to Fix Remote Desktop Invalid Configuration Registry ErrorFix Task Scheduler Permission Denied on Windows 10Fix Windows Activation File Locked Error: Step-by-Step GuideWindows Terminal 404 Not Found in VS Code: FixFix PowerShell 404 Not Found on GET RequestsWindows Defender Threat Service Not Running – How to FixHow to Reset PowerShell Configuration for Stability