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...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Chrome High Memory Usage Not Working
If Chrome is using excessive memory and then stops working—freezing, crashing, or becoming unresp...
Fix Windows Activation Error After Hardware Change
If you've recently replaced your motherboard, CPU, or other major hardware, you may see a Windows...
Outlook Update Not Working After Reboot: How to Fix
You restart your computer, and Outlook either won't launch or hangs on an update that never compl...
Fix PowerShell 502 Bad Gateway Caused by TLS Version Mismatch
If you see a 502 Bad Gateway error when running PowerShell scripts that call web...
How to Reinstall a Chrome Extension Without Losing Data
When a Chrome extension stops working, you might need to reinstall it. But you don't want to lose...
Topic paths
Quick titles
Outlook SMTP Server Not Responding FixFix Remote Desktop Auto-Start ProblemsWindows 10 Remote Desktop Port Conflict FixFix OneDrive Sync Module Not Found Error 0x8004de40Chrome Extension Sync Not Working Permission Denied FixHow to Fix PowerShell Access Denied on StartupHow to Fix 'Access Denied' When Opening Command Prompt Log FilesHow to Fix Windows Search Using Log Files