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...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Windows Activation Blank Screen After Update
After a Windows update, some users see only a blank screen at login. The system may be unresponsi...
How to Transfer Windows 10 Digital License to a New PC
If you upgraded to Windows 10 for free or bought a retail license, you can move that license to a...
Fix Microsoft Store Connection Refused Error
When you open Microsoft Store and see 'Connection refused' or a similar network error, it usually...
Fix Windows Search Not Showing Results Due to Authentication Error
You type in the Windows Search bar, but nothing appears—or you see a brief error message about au...
Fix Microsoft Store Service Unavailable Due to Network Settings
When you open Microsoft Store and see an error like “Service unavailable” or “Try that again – So...
Issue queue
SitemapHow to Fix Windows Defender Network Permission Denied
How to Fix Authentication Failed in Command Prompt
Locate and Fix Outlook Cache Problems in Windows 11
Stop Chrome 404 Errors by Disabling Extensions
Teams Blank Screen Troubleshooting: Web vs Desktop Methods
New User Guide: Microsoft Teams Camera Setup
How to Fix nvm Not Recognized After Reboot
Fix Microsoft Teams Connection Timeout Configuration in 5 Steps
Windows Terminal Setup Checklist for Developers
Solve Chrome DNS Errors: Safe Mode Guide
Chrome Extensions: How to Set Permissions Safely
Fix Permission Denied in Task Scheduler
How to Fix Authentication Failed in Command Prompt
Locate and Fix Outlook Cache Problems in Windows 11
Stop Chrome 404 Errors by Disabling Extensions
Teams Blank Screen Troubleshooting: Web vs Desktop Methods
New User Guide: Microsoft Teams Camera Setup
How to Fix nvm Not Recognized After Reboot
Fix Microsoft Teams Connection Timeout Configuration in 5 Steps
Windows Terminal Setup Checklist for Developers
Solve Chrome DNS Errors: Safe Mode Guide
Chrome Extensions: How to Set Permissions Safely
Fix Permission Denied in Task Scheduler