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 listCommand Prompt Command Not Found Troubleshooting Checklist
When you type a command in Command Prompt and get 'not recognized as an internal or external comm...
How to Enable PowerShell Scripts on Windows 11
You try to run a .ps1 script on Windows 11 and get an error like "cannot be loaded because runnin...
How to Fix Outlook Data File Cannot Be Accessed Error
You open Outlook and see: "Outlook data file cannot be accessed." This usually means Outlook can'...
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 ...
How to Fix Windows Search Not Connecting to Outlook
When Windows Search loses connection to Outlook, you might see blank results, slow searches, or a...
Topic paths
Quick titles
How to Fix Windows Terminal 404 Error After UpdateFix Windows Activation Login Loop Stuck on Sign-In ScreenChrome Extension Configuration Troubleshooting GuideResolve Teams Proxy Connection IssuesChrome Profile Rate Limit Error: Windows 10 Fix GuideChrome Permission Denied Error: Mac TroubleshootingFix Windows Defender Malware Protection History Not ShowingChrome Keeps Crashing? Fix Memory Leak Fast