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 listFix Microsoft Store Sync Issues Between Devices
You bought an app on one Windows PC, but it doesn't show up on another. Or your settings aren't s...
How to Fix BitLocker Sync Issues with Active Directory
You might see a BitLocker recovery key not backing up to Active Directory, or a status of "Backup...
Fix Task Scheduler Not Starting Due to UAC
You set up a task in Task Scheduler to run automatically at startup, but it never executes. If Us...
How to Fix BitLocker Login Loop Without Recovery Key
You enter your BitLocker PIN or password, the screen flashes, and you're back at the login prompt...
How to Fix Firefox Secure Connection Failed Error
When Firefox shows a “Secure Connection Failed” error, it means the browser couldn’t verify the w...
Topic paths
Quick titles
Fix Windows Security High CPU Usage on Windows 10Task Scheduler Logon Trigger Troubleshooting GuideAndroid Studio Can't Find JDK: Troubleshooting StepsFix Chrome Sync Issues by Resetting Browser SettingsTroubleshoot High CPU in PowerShellTroubleshooting RDP Error 0x104Remote Desktop Configuration Reset: Step-by-StepHow to Enable Remote Desktop in Windows Firewall