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 WinSCP Permission Denied Publickey Authentication
When connecting to a remote server with WinSCP using SSH public key authentication, you may see t...
How to Fix pgAdmin Server Connection Refused
You're trying to connect to a PostgreSQL server via pgAdmin, but you get a "connection refused" e...
Fix Windows 10 Error 0xc004c003: Invalid Product Key
You see error 0xc004c003 during Windows 10 activation, with a message that the product key is not...
Fix Windows Defender Access Denied Error on Windows 11
You open Windows Security on Windows 11 and see 'Access Denied' or 'This app has been blocked by ...
Outlook Not Receiving Emails Due to Full Mailbox: Fixes
You open Outlook expecting new messages, but nothing arrives—even though your phone or webmail sh...
Issue queue
SitemapImageMagick PowerShell PATH Fix for Windows 10
Disable Antivirus to Fix Edge Update Failed Error
How to Reset Microsoft Store Cache When It Won't Open
Fix Windows Update Error 0x8024402c: Configuration Issues
BitLocker Key Not Working After Update – Troubleshooting Guide
How to Fix Cloudflare 522 Error on WordPress
No Matching Distribution Found for NumPy: Fix Pip Install Error
How to Resolve PostgreSQL Connection Refused on Remote Server
How to Fix Windows Update Service Not Running
Fix High CPU Usage by MsMpEng.exe (Windows Defender)
Fix Python venv Activation on Ubuntu 22.04
Fix Windows Update Dependency Conflict Manually
Disable Antivirus to Fix Edge Update Failed Error
How to Reset Microsoft Store Cache When It Won't Open
Fix Windows Update Error 0x8024402c: Configuration Issues
BitLocker Key Not Working After Update – Troubleshooting Guide
How to Fix Cloudflare 522 Error on WordPress
No Matching Distribution Found for NumPy: Fix Pip Install Error
How to Resolve PostgreSQL Connection Refused on Remote Server
How to Fix Windows Update Service Not Running
Fix High CPU Usage by MsMpEng.exe (Windows Defender)
Fix Python venv Activation on Ubuntu 22.04
Fix Windows Update Dependency Conflict Manually