How to Fix Windows Defender Service Not Running
If you see a message that Windows Defender is not running or the security center shows it's off, ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Security Offline Installer Error 0x80070643
You're trying to install Windows Security (formerly Windows Defender) using an offline installer,...
Optimize Microsoft Store for Better Performance
If the Microsoft Store feels sluggish, takes long to load, or downloads are slow, it's often due ...
Fix OneDrive Sync Not Syncing Files on Ubuntu
If you're using OneDrive on Ubuntu and files aren't syncing, you're not alone. This guide walks t...
Windows Security 404 Not Found: Setup and Fix Guide
When you open Windows Security (formerly Windows Defender) and see a blank page or a '404 Not Fou...
Fixing Cloudflare 521 Error with Nginx Configuration
The Cloudflare 521 error indicates that your web server is refusing connections. This usually mea...
Topic paths
Quick titles
Get-ChildItem Access Denied Error FixHow to Fix Chrome Repeated Login PromptTeams DNS Error After Update: Quick FixesCrashLoopBackOff Troubleshooting GuideTroubleshoot OneDrive Sync Pending ForeverWindows Security Token Configuration Fix GuideFix Chrome Resolution Too Small on UbuntuFix Chrome Blank Profile on Startup