How to Fix Windows Defender Error 0x80070422
When you see error 0x80070422 while trying to start Windows Defender, it typically means the Wind...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Defender DNS Error 0x800704cf
You open Windows Defender and see error code 0x800704cf. This usually means Windows Defender can’...
PowerShell Not Opening on Windows 10: Quick Fixes
If PowerShell won't open on Windows 10—no window appears, it flashes and closes, or you get an er...
Fix Microsoft Store 404 Page Not Found Error
When you browse the Microsoft Store and encounter a 404 page not found error, it usually means th...
How to Enable Command Prompt When Disabled by Administrator
If you try to open Command Prompt and see a message like “Command Prompt has been disabled by you...
Fix Task Scheduler Error 2147943785 (0x800710D9)
When Task Scheduler fails to start a task and returns error 2147943785 (0x800710D9), the task usu...
Topic paths
Quick titles
Resolve Git SSL Certificate ErrorResolve Command Line Proxy Sync FailuresVisual Studio Installer Hangs at Initializing: FixesTroubleshooting Windows Terminal 404 ErrorHow to Locate Chrome Debug Log on Windows 11Windows Security 404 Not Found: Setup and Fix GuideHow to Fix Cloudflare Error 522: Origin Server TimeoutHow to Fix Windows Defender Mac Sync Issues