
Fix Windows Defender Error 0x80070643 on macOS
If you see error 0x80070643 when installing or updating Windows Defender on a Mac (via Parallels,...
Software troubleshooting desk

If you see error 0x80070643 when installing or updating Windows Defender on a Mac (via Parallels,...

You try to connect to a remote PC via Remote Desktop (RDP) and get error code 0x104. The connecti...

You open Outlook and it throws an SSL certificate error — something like “The name on the securit...

You try to open Windows Defender or run a scan and get an "Access Denied" message. This usually m...

If you're new to Windows 10 or the Microsoft Store isn't working as expected, this guide covers i...

You open Windows Security and see 'Authentication failed' when trying to use Windows Defender. Th...