Fix Windows Defender Not Opening Error 404
You try to open Windows Defender and get an error 404 – the page or resource can't be found. This...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesGit Clone Publickey Permission Denied After Adding SSH Key
You've added your SSH public key to your Git hosting service (GitHub, GitLab, Bitbucket, etc.), b...
Fix Windows Defender Real-Time Protection Crashing on Windows 11
If Windows Defender’s real-time protection keeps turning off or throws an error on Windows 11, yo...
Fix Windows Terminal Permission Denied Error on Launch
When you launch Windows Terminal and see a 'permission denied' error, it usually means the termin...
How to Fix Windows 10 Activation Login Loop After Update
After a Windows 10 update, some users encounter a login loop where the system repeatedly prompts ...
Fix Git 'Fatal: Repository Not Found' Despite SSH Key Setup
You've set up an SSH key and added it to your Git hosting service, but when you try to clone or p...
Issue queue
SitemapWindows Terminal 504 Timeout Proxy Fix
Troubleshooting Certbot Nginx SSL Issues
Windows Update 0x8024402c Troubleshooting Guide
OneDrive Memory Leak Troubleshooting Guide
Troubleshoot PowerShell Migration Tool Not Working
Windows Defender Not Responding? Fix It Now
Windows Activation Error Fix Guide
How to Fix OneDrive Reset Permission Denied
How to Resolve Outlook Access Denied on Public Folders
Windows RDP Black Screen After Login – Fixes That Work
How to Break a Windows Login Loop After Update
Small Business Windows Security Setup Checklist
Troubleshooting Certbot Nginx SSL Issues
Windows Update 0x8024402c Troubleshooting Guide
OneDrive Memory Leak Troubleshooting Guide
Troubleshoot PowerShell Migration Tool Not Working
Windows Defender Not Responding? Fix It Now
Windows Activation Error Fix Guide
How to Fix OneDrive Reset Permission Denied
How to Resolve Outlook Access Denied on Public Folders
Windows RDP Black Screen After Login – Fixes That Work
How to Break a Windows Login Loop After Update
Small Business Windows Security Setup Checklist