Fix Windows Defender Service Not Starting (Error 0x80070422)
You try to start Windows Defender but get error 0x80070422: “The service cannot be started, eithe...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix CMD High Memory Usage
If you notice that Command Prompt (cmd.exe) is using an unusually high amount of memory (e.g., hu...
Fix pip SSL Certificate Error in Python on Windows, macOS, Linux
You run pip install somepackage and get an SSL certificate error: certificate ...
How to Fix Windows Terminal 404 Not Found Error
You open Windows Terminal and see a '404 Not Found' error, often when clicking a link or launchin...
Fix Microsoft Store High CPU Usage on Windows 11
You open Task Manager and see Microsoft Store eating 20-30% CPU, even when you're not using it. T...
How to Fix Windows Security Not Responding
Windows Security (formerly Windows Defender Security Center) may stop responding, hang on launch,...
Topic paths
Quick titles
Troubleshoot Windows Security Startup FailureChecklist for Configuring DNS for Remote DesktopFix Teams Proxy Authentication Error in Windows 10Run a Single PowerShell Script with Restricted PolicyFix npm EACCES Error: Permission Denied on node_modulesAdmin Guide: Microsoft Teams Migration ChecklistHow to Fix 'File in Use' Error in PowerShellPowerShell Disappeared After Windows Update Fix