Sharepoint Connector to on-prem sharepoint not working

Hello,

i’m trying to use the MS Authentication and Sharepoint online connector to connect to an on-prem sharepoint.

So we do have new online sharepoints (i guess the new 360 ones?) for which the connection works, however the connection to on-prem doesn’t work:

the error massage is:

" Execute failed: The provided path does not exist, or does not represent a site"

I just wanted to know whether this is feasible at all with the MS auth and SP online connector?

many thanks in advance