mapping Google drive

I used to map the google drive directory to a network drive letter (i.e. M:)/
From the moment I installed Avast Internet Security - I can’t do it?

Do I need to change something in the definitions or so?

Do you mean you cant connect to google drive?
could it be a avast firewall problem?

Setting up Firewall Application Rules in Avast Antivirus
https://support.avast.com/en-eu/article/Antivirus-Firewall-Application-Rules

you may need to experiment with firewall network profile in private or puplic mode
also Internet Connection Sharing Mode on/off

I can connect to google drive
but I cannot map a drive letter.

I want to map M: to c:\users<myuser>\googledrive

I could do it before I installed the premier version of Avast.