set a Teams meeting in Outlook: no link created

Hi everyone, 

When I create a Team meeting in Outlook, the link ot the Teams room is not created. 

and the meeting does not appear on my Teams calendar. 

but on the other way round: when creating a meeting in Teams, I do receive the invite into my mailbox, and the invite is set in my Outlook calendar with the link to the room. 

I certainly must have missed something. 

thank you for your help

Esme