Came to say I'm having the same problem with TA_MS_Teams v 1.1.3. I am unable to establish the subscription in this version: ERROR pid=84939 tid=MainThread file=base_modinput.py:log_error:309 | Could not create subscription: 400 Client Error: Bad Request for url: https://graph.microsoft.com/v1.0/subscriptions  I haven't had an issue with previous versions of the TA.  Downgrading to TA_MS_Teams v1.1.1 and the subscription begins working again. ... View more

If I'm using the subscription and test with curl on the HF where the TA is installed, I'm getting this answer once I got the token: {"@odata.context":"https://graph.microsoft.com/v1.0/$metadata#subscriptions","value":[]} ... View more