I have Full paid AVG Internet Security running

Hello Donald.
Thank you for contacting AVG Community Support. 
We understand how difficult this is for you.
We will surely help you with it.
Please let me know if you have the latest version (https://support.avg.com/SupportArticleView?l=en&urlName=update-avg-antivirus&q=update+AVG) of AVG Internet Security installed in your computer and share the screenshot (https://support.avg.com/SupportArticleView?l=en&urlName=AVG-Create-screenshot&q=How+to+create+a+screenshot&supportType=home) of the threat that was detected by other security program.
We await your prompt response.

Hello I need some help with the removal of atrojan virus. The virus is not detected by the AVG program. The Trojan is detected by the Microsoft Defender. The Trojan will not go away and does not want to quarantine. It is persistent. The name is:

Win32/Sabsik.FL.B!ml

How can I get rid of it??
Thanks.

Hello Donald.
Thank you for contacting AVG Community Support. 
We understand how difficult this is for you.
We will surely help you with it.
Please let me know if you have the latest version (https://support.avg.com/SupportArticleView?l=en&urlName=update-avg-antivirus&q=update+AVG) of AVG Internet Security installed in your computer and share the screenshot (https://support.avg.com/SupportArticleView?l=en&urlName=AVG-Create-screenshot&q=How+to+create+a+screenshot&supportType=home) of the threat that was detected by other security program.
We await your prompt response.