Fix Windows Defender Threat Service Not Running Error
You open Windows Security and see a yellow warning: “Threat service has stopped. Restart it now.”...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listWindows Defender 502 Bad Gateway: Troubleshooting Checklist
If you see a 502 Bad Gateway error when opening Windows Security or trying to update Windows Defe...
Fix 'File in Use by Another Program' Error in Command Prompt
When you try to delete, rename, or move a file in Windows Command Prompt and see the error 'The f...
Fix Windows Security 504 Gateway Timeout During Windows Update
If you see a "504 Gateway Timeout" error in Windows Security while trying to run Windows Update, ...
Fix 'Permission Denied' When Running Windows Activation on Ubuntu
If you're trying to activate Windows from Ubuntu and see a 'permission denied' error, you're like...
Checklist to Diagnose Chrome Profile High CPU Usage
If Chrome is using 90%–100% of your CPU even with just a few tabs open, the problem is often the ...
Topic paths
Quick titles
Unlock Microsoft Store Files Without ResetTroubleshoot Error 0x80070035 in Windows SearchHow to Unstick Windows Security Scan at 99%Microsoft Teams Network Setup: Firewall and QoS GuideHow to Restore Windows Defender Offline Scan After UpdateVSCode Debugger Troubleshooting ChecklistWindows Security Reset Not Responding – How to FixHow to Fix Chrome Sync Failed Network Error