How to Fix Windows Update Port Already Allocated Error
When running Windows Update, you might see an error like "Port already allocated" or "The process...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Update Stuck at 100% in Safe Mode
If you boot into Safe Mode to troubleshoot a stuck Windows Update, only to find the update still ...
Fix Edge Profile Sync Paused on Windows 10
If you see "Sync is paused" in Microsoft Edge on Windows 10, your bookmarks, passwords, and setti...
How to Fix Windows Update 502 Bad Gateway Error
You're trying to run Windows Update and you get a 502 Bad Gateway error. The update check fails, ...
Fix Microsoft Store Permission Denied Error
You try to install or update an app from the Microsoft Store and get a 'permission denied' error....
Fix Windows Defender Error 0x80070643 – Version Mismatch
You update Windows Defender and see error code 0x80070643. The update fails, and Defender may dis...
Topic paths
Quick titles
Windows Activation Backup & Restore Troubleshooting ChecklistFix Windows Update Migration Not Working After Feature UpdateFix Chrome Extension Sync Not WorkingFix Microsoft Teams Invalid Configuration Sync IssueOneDrive Sync Token Expired Mac: Quick FixesHow to Fix Windows Activation DNS ErrorFix Windows Defender Firewall Blocking Internet AccessPowerShell Freezes on Launch: Troubleshooting Guide