Error code 0x80070424 Windows Defender under Windows 10 home edition

Hello Ming Lui,
Sorry to know that you have issues with windows defender.
It seems to be an issue with your windows defender which is inbuilt program with Windows 7.
Please contact Microsoft support to check with this issue.
Please review this link http://support.microsoft.com/default.aspx?ln=en-ca
Thank you.

Windows Defender stop running under "Windows 10 home" and get error code "0x80070424". How to fix it?

Hello Ming Lui,
Sorry to know that you have issues with windows defender.
It seems to be an issue with your windows defender which is inbuilt program with Windows 7.
Please contact Microsoft support to check with this issue.
Please review this link http://support.microsoft.com/default.aspx?ln=en-ca
Thank you.

David, Windows Defender is a software product that attempts to detect and remove malware. It was first released as a free antispyware program download for WindowsXP, shipped with Windows Vista and Windows 7 and made into a full antivirus program replacing Microsoft Security Essentials as part of Windows 8 and later versions. Therefore on Windows 10 it's the full antivirus program which will obviously conflict with AVG & should be disabled.
AVG Guru