Fix Windows Defender Connection Refused Error 0x80070005
When you open Windows Defender (Microsoft Defender Antivirus) and see a connection refused error ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Windows Security Not Working
Windows Security (formerly Windows Defender) may fail to open, show a blank page, or refuse to up...
Troubleshoot Windows Defender Using Log Files: A Checklist
When Windows Defender stops updating, fails to scan, or blocks legitimate files, the built-in log...
Fix Microsoft Teams Startup Folder Not Working
If you have added Microsoft Teams to your Windows startup folder but it doesn't launch automatica...
Fix Windows Terminal Permission Denied Running Script
When you try to run a PowerShell or Command Prompt script in Windows Terminal and see a "permissi...
Fix Task Scheduler Permission Denied for SSL Certificate Tasks
You set up a scheduled task in Windows that needs to access an SSL certificate—perhaps for certif...
Topic paths
Quick titles
Microsoft Store 502 Bad Gateway FixMicrosoft Teams 502 Bad Gateway Error: Troubleshooting ChecklistWindows Activation Cache Clear Still Failing? Try These FixesTroubleshoot Outlook Email Timeout IssuesRemote Desktop Certificate Expired – Troubleshooting GuideFix Windows Update Certificate Trust ErrorHow to Resolve Chrome Certificate Authentication FailureWindows 11 Task Scheduler Command Missing Error