Fix Windows Defender Service Not Starting (Error 404)
If you see error 404 when trying to start Windows Defender, it usually means the service executab...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listGitHub Actions Workflow Canceled Manually: Causes and Fixes
Seeing a GitHub Actions workflow marked as 'canceled manually' can be confusing, especially when ...
Fix Microsoft Store Service Unavailable in Windows 10
When you open the Microsoft Store on Windows 10 and see “Service Unavailable” or “Something went ...
Fix PuTTY Connection Refused After Server Restart
You restart your server, open PuTTY, and see "Connection refused". This is a com...
Fix Windows Defender SSL Certificate Error 0x80072f0d
When Windows Defender or Microsoft Defender Antivirus shows error code 0x80072f0d, it usually mea...
How to Fix Task Scheduler Not Running on Ubuntu
If you rely on scheduled tasks on Ubuntu—whether via cron, systemd timers, or anacron—and they su...
Topic paths
Quick titles
Microsoft Store Keeps Asking to Sign In? Fix ItOutlook New Profile Stuck on Loading – How to FixFix WinRAR Checksum Error Settings GuideFix Windows Update Failed Error 0x800f081fHow to Stop OneDrive Asking to Sign In RepeatedlyHow to Fix Search Version Mismatch in WindowsFix File Path Too Long in OneDrive (Error 0x80070194)Troubleshoot Windows Activation Backup and Restore