Forum Discussion
Kristaps_Baumanis
May 17, 2024Copper Contributor
Meeting Bot issue: Did not receive valid response for JoinCall request from call modality controller
I'm trying to join a Teams Meeting with a bot. I used this https://microsoftgraph.github.io/microsoft-graph-comms-samples/docs/articles/index.html#making-an-outbound-call-to-join-an-existing-microsof...
doronneumann
Dec 23, 2025Copper Contributor
I figured out why this happens.
When Bot joins the conversation it can do it with GuestIdentity. In my case when I specify the DisplayName for this guest identity, join fails when admitted from the waiting room with the "Did not receive valid response for JoinCall request from call modality controller"
If I omit this value, everything works !