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 listBitLocker Drive Not Unlocking with Password: Fixes to Try
You enter your BitLocker password, but the drive won't unlock. This can happen for several reason...
How to Fix Windows Update 404 Not Found Error
When Windows Update returns a 404 Not Found error, it usually means the update server can't locat...
Fix Chrome Profile Connection Refused Error
When you see a 'connection refused' error while trying to open a Chrome profile, it usually means...
Fix Outlook Not Opening After a Recent Update
After a Windows or Microsoft 365 update, Outlook may fail to open—no window appears, or it crashe...
PowerShell Version Mismatch Between Client and Server: Fixes
When you run a PowerShell script or command against a remote server, you might see errors about v...
Topic paths
Quick titles
Fix Task Scheduler Access Denied ErrorBitLocker Access Denied – Fix Encryption LockMicrosoft Store Access Denied Fix GuideResolving Command Prompt Dependency Conflicts and Permission ErrorsReduce Teams CPU Load: Step-by-Step GuideWindows Defender Cache Too Large – How to CleanChrome Won't Launch Error 0xc0000022 FixStep-by-Step Windows Security Troubleshooter