How to Fix Windows Defender Service Unavailable in Windows 10
If you see 'Windows Defender service unavailable' in Windows 10, the antivirus may be disabled or...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Microsoft Teams 502 Bad Gateway Error When Joining a Meeting
When you try to join a Microsoft Teams meeting and see a 502 Bad Gateway error, ...
Fix Command Prompt Token Expired After Login
You log into a system, open Command Prompt, and immediately see an error that your authentication...
Fix Redis Connection Refused with Password Authentication Errors
When Redis returns Connection refused and you have password authentication enabled, ...
Command Prompt Service Unavailable: Troubleshooting Checklist
When you open Command Prompt and see 'Service unavailable' or 'The requested service is not avail...
Change PowerShell Execution Policy Without Admin Rights
If you're trying to run a PowerShell script but get an error about execution policy, you might no...
Topic paths
Quick titles
Fix Task Scheduler 'File Locked' or 'Access Denied' ErrorsFix Windows Activation Not Connecting to ServerWindows Defender Proxy Error Troubleshooting GuideHow to Fix Chrome Token Expired Error 400How to Fix Windows Update Blank Screen in Safe ModeHow to Fix Task Scheduler Dependency Conflicts During SyncFix Dependency Conflicts Causing Error 0x8007042cHow to Fix Task Scheduler Error 0x80070057