Fix Windows Defender Service Not Starting Error
If you see an error that Windows Defender won't start—or the service stops immediately—it's usual...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listChecklist for Troubleshooting OneDrive Sync Issues
If files aren't syncing, icons are stuck, or you see error messages, this checklist walks you thr...
Chrome Can't Connect to Google Services: Fixes That Work
You open Chrome, but Gmail, Google Drive, or even Google Search won't load. Other sites work fine...
Fix Chrome SSL Error: Cannot Connect to Website
You try to open a website in Chrome but see an error like “Your connection is not private...
npm Command Not Found: Troubleshooting Checklist
You type npm install and get npm: command not found. This typically mea...
Fix OneDrive Sync Module Not Found Error 0x8004de40
You see the error "Sync module not found" with code 0x8004de40 when trying to use OneDrive. This ...
Topic paths
Quick titles
How to Fix Cloudflare Error 522: Connection Timed OutTroubleshoot RDP Connection TimeoutsHow to Fix Windows Search High CPU UsageWindows Update Error 0x800f0922 TroubleshootingTroubleshoot Remote Desktop Reset Tool HangHow to Get Windows Security Back After UpdateHow to Fix Windows Defender Startup Configuration ErrorPowerShell Settings Won't Reset: Troubleshooting Guide