Logon Help: "Could not connect to IDM server" Message

Hi all,

I'm implementing Logon Help with IdM 7.2 and I'm experiencing the message "Could not connect to IDM Server".

In the backend is everything set (also group policy) and connecting as well as through https.

I'm guessing that this could be a Windows Problem (here we have with w7) or certificate.

Do you guys have any thougts about it?

Thanks!