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 Port Already Allocated Error in Windows Server 2019 Activation
When activating Windows Server 2019, you might see an error like "Activation failed: port already...
How to Fix 'Windows Update Command Not Found' in Command Prompt
When you type wuauclt or usoclient in Command Prompt and get a 'command...
How to Restore Windows from Backup After a Failed Update
If a Windows update fails and leaves your system unbootable or unstable, restoring from a backup ...
Microsoft Store Troubleshooting Guide: Step-by-Step Fixes
If the Microsoft Store won't open, apps fail to download, or you see error codes like 0x80072efd ...
How to Backup Task Scheduler Settings Before Resetting
When you're about to reset your Windows PC or reinstall the operating system, you may lose all yo...
Topic paths
Quick titles
Windows Security Certificate Error in Outlook 365: FixesRestore Windows Search Settings from Backup GuideMySQL Remote Access Setup: Fixing Connection RefusedResolve 504 Gateway Timeout in Windows SearchOneDrive Sync Not Working? Check Timeout SettingsFixing Windows Security 502 Bad Gateway: Configuration StepsAzure PowerShell Token Expires Every Hour FixWindows Defender Path Error Troubleshooting Guide