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 listFix Windows Activation Error 0x80070005 Permission Denied
You see error 0x80070005 with "Permission denied" when trying to activate Windows. This usually m...
Fix OneDrive Permission Denied Error 0x80070005
You see a 'Permission Denied' error with code 0x80070005 when trying to open or sync files in One...
Fix Microsoft Teams Service Unavailable After Update
After a Teams update, you might see a 'Service Unavailable' error when trying to sign in or use t...
Fix Firefox Not Responding: Disable Hardware Acceleration
If Firefox frequently stops responding, freezes, or shows a "Not Responding" message, hardware ac...
How to Fix Chrome 502 Bad Gateway Error on Mac
If you see a 502 Bad Gateway error in Chrome on your Mac, it usually means that a server upstream...
Topic paths
Quick titles
How to Resolve Activation Authentication Failed in Windows 10Windows Security Service Won't Start: Error 0x80070422Fix Windows Activation 504 Error ChecklistBrave Sync Troubleshooting: Reset and Repair StepsFix Windows Update Sync Issues Between DevicesFix ImageMagick 'convert' Not Recognized in WindowsUbuntu Chrome Crash After Update: Fix GuideHow to Fix Windows Update Error 0x8024402c During Setup