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 listHow to Fix PowerShell Connection Refused Error
When you see Connection refused in PowerShell, it usually means the remote computer ...
Fix Remote Desktop Login Loop Error 0x80070005
If you're stuck in a login loop when connecting to a remote desktop and see error code 0x80070005...
Fix Windows Terminal SSL Error 0x80072f8f
When you see error code 0x80072f8f in Windows Terminal, it usually means the system can't verify ...
Fix Windows Activation Blocked by Firewall
If Windows activation fails with an error about a blocked firewall, your PC likely can't reach Mi...
Windows Update Not Working on Ubuntu Dual Boot: Fixes
If Windows Update fails or hangs after setting up a dual boot with Ubuntu, the problem is often r...
Topic paths
Quick titles
Microsoft Store App Install Failure ChecklistVS Code Admin Mode for PowerShell ErrorsFix Windows Defender Version Mismatch Permission Denied ErrorHow to Fix Microsoft Store 404 Error CodeHow to Fix Outlook SSL Certificate ErrorHow to Refresh Windows Security TokenWindows Update Failed: Restore from Backup GuideMicrosoft Store 404 Error Windows 11 Fix