Fix Windows Defender 404 Not Found Error on Windows 10
You click to open Windows Defender Security Center and see a 404 page, or the Settings app shows ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listChrome Profile Can't Connect to Localhost: Fixes
You try to access a local development server at http://localhost:3000 (or another po...
Fix Command Prompt High CPU Usage Caused by Windows Update
You open Task Manager and see Command Prompt (cmd.exe) using a lot of CPU – sometimes 30% or more...
Fix Task Scheduler Permission Denied for SSL Certificate Tasks
You set up a scheduled task in Windows that needs to access an SSL certificate—perhaps for certif...
How to Fix BitLocker Auto-Unlock Not Working
If BitLocker auto-unlock stops working, you're prompted for a recovery key or password each time ...
Fix 'powershell not recognized as internal or external command'
When you type powershell in Command Prompt or a script and see the error "'power...
Topic paths
Quick titles
How to Repair Microsoft Store App for Update IssuesFix DNS Resolution in Windows Terminal with VPNFix Windows Terminal Missing from Start MenuMicrosoft Store Proxy Error Troubleshooting GuideHow to Fix Remote Desktop Blank Screen After ConnectingTeams File Locked Error: Quick FixesWindows Activation Hanging at Organization Server ScreenFix Slow Windows Defender Scan Times