Connection CRM On-Premise IFD to Office 365

HI Everyone,

I have just finished linking up my IFD Dynamics 365 On-premise to Office 365 using the server side sync.
I have tested this and everything seems to be working correctly. 
After this I have installed the new "App for Outlook" but for my user. 
The installation went fine and I can see the "Dynamcis 365" button on every mail that I open.
When I click it redirects me to my IFD CRM but I alwas shows me a windows authentication pop-up and not the login page of my ADFS.

Has anyone set this up already?

Thanks,

Ive