How to Enable Windows Defender Service Manually
If Windows Defender won't start or you see warnings that it's turned off, the underlying service ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix 'Port Already Allocated' with Security Permission Denied
You try to start a service or application, and you get an error like "port already allocated" or ...
Fix Windows Activation Update Error 0x80070643
If you see error 0x80070643 during a Windows activation update, the update process has been inter...
How to Fix Windows Update Dependency Conflicts
You click 'Check for updates' and see an error, or updates download but fail to install with a me...
Fix Windows Activation Sync Failure with Microsoft Account
You see an error that Windows activation failed to start sync with your Microsoft account. This u...
Fix Windows Security Service Stopped Manually Error
If you see "Windows Security service stopped manually" in Event Viewer or your antivirus reports ...
Topic paths
Quick titles
Task Scheduler Not Running After Windows Update? Fix It HereOneDrive Processing Changes Error TroubleshootingMongoDB Auth Failed After Upgrade? Here's the FixHow to Unlock a File in Remote DesktopFix Chrome ERR_TUNNEL_CONNECTION_FAILED on Windows 10Outlook Backup Restore Checklist for Complete RecoveryWindows Activation Port Conflict TroubleshootingFix Windows Security Rate Limit Error Configuration