How to Fix Windows Defender Service Unavailable in Windows 10
If you see 'Windows Defender service unavailable' in Windows 10, the antivirus may be disabled or...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Bypass Proxy in PowerShell Commands
When running PowerShell commands that make web requests, a configured proxy can sometimes block o...
Fix Microsoft Teams 502 Bad Gateway Due to Network Config
You open Microsoft Teams and see a 502 Bad Gateway error. This usually means you...
Fix Putty Connection Refused on Port 22
You try to connect to a remote server with Putty on port 22, but you get 'Connection refused'. Th...
Apache Service Not Starting: Troubleshooting Checklist
When Apache won't start, the error message can be cryptic or nonexistent. This checklist walks th...
Fix Remote Desktop Not Working on Ubuntu After Update
After a system update, you may find that remote desktop connections to your Ubuntu machine stop w...
Topic paths
Quick titles
Fix Microsoft Teams Internet Connectivity Check Not WorkingHow to Fix Windows Security Version Mismatch Configuration ErrorFix Windows 10 Activation Permission Denied ErrorFix Microsoft Teams Backup FailuresFix Microsoft Store Permission Denied Error with WSResetHow to Fix Task Scheduler Certificate Error After UpdateFix Firefox Not Responding When Opening a New TabHow to Resolve Port Conflicts with Windows Defender Firewall