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 listWindows Defender Token Expired: How to Fix It
If you see a message that your Windows Defender token has expired, it usually means the security ...
Windows Activation Backup: Saved Keys Not Showing?
You backed up your Windows activation using the built-in backup tool or a third-party utility. La...
Fix Windows Activation Connection Refused After Update
After a Windows update, you might see an error that activation servers can't be reached—often phr...
Fix 502 Bad Gateway in Chrome: Clear Profile Cache
If you're seeing a 502 Bad Gateway error in Chrome, the problem is often on the server side. But ...
How to Fix PowerShell Execution Policy Error
When you try to run a PowerShell script and get an error like ... cannot be loaded because ...
Topic paths
Quick titles
Pre-Migration Checklist for Switching to Office 365Windows Security Connection Refused: Antivirus Blocking FixHow to Fix Chrome Token Expired ErrorFix Windows Activation Module Not Found ErrorHow to Reinstall a Chrome Extension Without Losing DataOutlook 0x80040154 Startup Error SolutionsFix High CPU Usage from Command Prompt at StartupHow to Resolve Microsoft Store Access Denied Issues