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 listFix Windows Defender Path Not Found Registry Error
If you see a 'Path not found' error when accessing Windows Defender settings or running a scan, t...
How to Fix Outlook Authentication Failed Error
You open Outlook, try to send or receive email, and get an authentication failed error. The progr...
Fix Windows Terminal Slow Startup: Practical Checks
If Windows Terminal takes several seconds to open—or shows a blank window before loading—it's usu...
Microsoft Teams Module Not Found: Troubleshooting Steps
If you see a "module not found" error when launching Microsoft Teams, it usually means a required...
How to Set Up OneDrive Selective Sync on Mac
If you're using OneDrive on a Mac with limited storage, selective sync lets you pick which folder...
Topic paths
Quick titles
Windows Update Network Error Fix ChecklistFix Microsoft Teams Connection Refused After UpdatePuTTY Connection Refused: Causes and FixesResolve pip SSL Certificate Verify Failed on MacMac OneDrive Sync Permission Denied TroubleshootingOutlook Cannot Access Data File: Permissions Fix GuideMicrosoft Store 502 Error Troubleshooting GuideFix Chrome Proxy Connection Errors