Global Secure Access / Entra Private Access with Desktop Client

Hi,

We would like to use the M-Files Desktop Client on our laptops and connect to our on-prem M-Files server by MS Global Secure Access / Entra Private Access. On our normal clients in the LAN, we use TCP/IP for the connection and a local Active Directory. While I can connect to the web version through GSA, I get a access denied error, when I try to add a connection. 
Does anyone has experience with GSA and the M-Files Desktop client?

Thanks for any help!

Best regards,

Christian