Setup AKS Bot on Local successfully but getting error MediaControllerConversationAddParticipantFailed when joining bot on call

I already setup the bot on my other laptop and it was able to join the call via Postman. But when I setup the bot on my other desktop I'm getting this error - MediaControllerConversationAddParticipantFailed

Everything is setup

• ngrok domain and reserved TCP address
• certificate was setup and used the thumbprint on the config
• Config in Azure was already setup

Here are the logs I'm getting:

{"@odata.type":"#microsoft.graph.commsNotifications","value":[{"@odata.type":"#microsoft.graph.commsNotification","changeType":"updated","resource":"/app/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceUrl":"/communications/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceData":{"@odata.type":"#microsoft.graph.call","state":"establishing","chatInfo":{"@odata.type":"#microsoft.graph.chatInfo","threadId":"19:meeting_Mjk3ZTY0ZjktYmU1Ny00NTUwLWEwZTgtYTlhMjgyZmMxYzlk@thread.v2","messageId":"0"},"meetingInfo":{"@odata.type":"#microsoft.graph.organizerMeetingInfo","organizer":{"@odata.type":"#microsoft.graph.identitySet","user":{"@odata.type":"#microsoft.graph.identity","id":"86d367dc-dee4-4e34-a364-42d19a1eeb12","tenantId":"4eaed389-575d-431d-8099-13c4566eed90"}}},"callChainId":"89f85a04-1883-4997-b768-77901e62aab5"}}]}
{"@odata.type":"#microsoft.graph.commsNotifications","value":[{"@odata.type":"#microsoft.graph.commsNotification","changeType":"updated","resource":"/app/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceUrl":"/communications/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceData":{"@odata.type":"#microsoft.graph.call","state":"establishing","chatInfo":{"@odata.type":"#microsoft.graph.chatInfo","threadId":"19:meeting_Mjk3ZTY0ZjktYmU1Ny00NTUwLWEwZTgtYTlhMjgyZmMxYzlk@thread.v2","messageId":"0"},"meetingInfo":{"@odata.type":"#microsoft.graph.organizerMeetingInfo","organizer":{"@odata.type":"#microsoft.graph.identitySet","user":{"@odata.type":"#microsoft.graph.identity","id":"86d367dc-dee4-4e34-a364-42d19a1eeb12","tenantId":"4eaed389-575d-431d-8099-13c4566eed90"}}},"callChainId":"89f85a04-1883-4997-b768-77901e62aab5"}}]}
{"@odata.type":"#microsoft.graph.commsNotifications","value":[{"@odata.type":"#microsoft.graph.commsNotification","changeType":"updated","resource":"/app/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceUrl":"/communications/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceData":{"@odata.type":"#microsoft.graph.call","state":"establishing","chatInfo":{"@odata.type":"#microsoft.graph.chatInfo","threadId":"19:meeting_Mjk3ZTY0ZjktYmU1Ny00NTUwLWEwZTgtYTlhMjgyZmMxYzlk@thread.v2","messageId":"0"},"meetingInfo":{"@odata.type":"#microsoft.graph.organizerMeetingInfo","organizer":{"@odata.type":"#microsoft.graph.identitySet","user":{"@odata.type":"#microsoft.graph.identity","id":"86d367dc-dee4-4e34-a364-42d19a1eeb12","tenantId":"4eaed389-575d-431d-8099-13c4566eed90"}}},"callChainId":"89f85a04-1883-4997-b768-77901e62aab5"}}]}
{"@odata.type":"#microsoft.graph.commsNotifications","value":[{"@odata.type":"#microsoft.graph.commsNotification","changeType":"updated","resource":"/app/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceUrl":"/communications/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceData":{"@odata.type":"#microsoft.graph.call","state":"establishing","chatInfo":{"@odata.type":"#microsoft.graph.chatInfo","threadId":"19:meeting_Mjk3ZTY0ZjktYmU1Ny00NTUwLWEwZTgtYTlhMjgyZmMxYzlk@thread.v2","messageId":"0"},"meetingInfo":{"@odata.type":"#microsoft.graph.organizerMeetingInfo","organizer":{"@odata.type":"#microsoft.graph.identitySet","user":{"@odata.type":"#microsoft.graph.identity","id":"86d367dc-dee4-4e34-a364-42d19a1eeb12","tenantId":"4eaed389-575d-431d-8099-13c4566eed90"}}},"callChainId":"89f85a04-1883-4997-b768-77901e62aab5"}}]}
Establishing -
{"@odata.type":"#microsoft.graph.commsNotifications","value":[{"@odata.type":"#microsoft.graph.commsNotification","changeType":"deleted","resource":"/app/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceUrl":"/communications/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceData":{"@odata.type":"#microsoft.graph.call","state":"terminated","resultInfo":{"@odata.type":"#microsoft.graph.resultInfo","code":500,"subcode":7112,"message":"MediaControllerConversationAddParticipantFailed"},"chatInfo":{"@odata.type":"#microsoft.graph.chatInfo","threadId":"19:meeting_Mjk3ZTY0ZjktYmU1Ny00NTUwLWEwZTgtYTlhMjgyZmMxYzlk@thread.v2","messageId":"0"},"meetingInfo":{"@odata.type":"#microsoft.graph.organizerMeetingInfo","organizer":{"@odata.type":"#microsoft.graph.identitySet","user":{"@odata.type":"#microsoft.graph.identity","id":"86d367dc-dee4-4e34-a364-42d19a1eeb12","tenantId":"4eaed389-575d-431d-8099-13c4566eed90"}}},"callChainId":"89f85a04-1883-4997-b768-77901e62aab5"}}]}
Terminated - MediaControllerConversationAddParticipantFailed
{"@odata.type":"#microsoft.graph.commsNotifications","value":[{"@odata.type":"#microsoft.graph.commsNotification","changeType":"deleted","resource":"/app/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceUrl":"/communications/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceData":{"@odata.type":"#microsoft.graph.call","state":"terminated","resultInfo":{"@odata.type":"#microsoft.graph.resultInfo","code":500,"subcode":7112,"message":"MediaControllerConversationAddParticipantFailed"},"chatInfo":{"@odata.type":"#microsoft.graph.chatInfo","threadId":"19:meeting_Mjk3ZTY0ZjktYmU1Ny00NTUwLWEwZTgtYTlhMjgyZmMxYzlk@thread.v2","messageId":"0"},"meetingInfo":{"@odata.type":"#microsoft.graph.organizerMeetingInfo","organizer":{"@odata.type":"#microsoft.graph.identitySet","user":{"@odata.type":"#microsoft.graph.identity","id":"86d367dc-dee4-4e34-a364-42d19a1eeb12","tenantId":"4eaed389-575d-431d-8099-13c4566eed90"}}},"callChainId":"89f85a04-1883-4997-b768-77901e62aab5"}}]}
{"@odata.type":"#microsoft.graph.commsNotifications","value":[{"@odata.type":"#microsoft.graph.commsNotification","changeType":"deleted","resource":"/app/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceUrl":"/communications/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceData":{"@odata.type":"#microsoft.graph.call","state":"terminated","resultInfo":{"@odata.type":"#microsoft.graph.resultInfo","code":500,"subcode":7112,"message":"MediaControllerConversationAddParticipantFailed"},"chatInfo":{"@odata.type":"#microsoft.graph.chatInfo","threadId":"19:meeting_Mjk3ZTY0ZjktYmU1Ny00NTUwLWEwZTgtYTlhMjgyZmMxYzlk@thread.v2","messageId":"0"},"meetingInfo":{"@odata.type":"#microsoft.graph.organizerMeetingInfo","organizer":{"@odata.type":"#microsoft.graph.identitySet","user":{"@odata.type":"#microsoft.graph.identity","id":"86d367dc-dee4-4e34-a364-42d19a1eeb12","tenantId":"4eaed389-575d-431d-8099-13c4566eed90"}}},"callChainId":"89f85a04-1883-4997-b768-77901e62aab5"}}]}
{"@odata.type":"#microsoft.graph.commsNotifications","value":[{"@odata.type":"#microsoft.graph.commsNotification","changeType":"deleted","resource":"/app/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceUrl":"/communications/calls/28205500-911f-46f6-9f45-0b3c737dc4e5","resourceData":{"@odata.type":"#microsoft.graph.call","state":"terminated","resultInfo":{"@odata.type":"#microsoft.graph.resultInfo","code":500,"subcode":7112,"message":"MediaControllerConversationAddParticipantFailed"},"chatInfo":{"@odata.type":"#microsoft.graph.chatInfo","threadId":"19:meeting_Mjk3ZTY0ZjktYmU1Ny00NTUwLWEwZTgtYTlhMjgyZmMxYzlk@thread.v2","messageId":"0"},"meetingInfo":{"@odata.type":"#microsoft.graph.organizerMeetingInfo","organizer":{"@odata.type":"#microsoft.graph.identitySet","user":{"@odata.type":"#microsoft.graph.identity","id":"86d367dc-dee4-4e34-a364-42d19a1eeb12","tenantId":"4eaed389-575d-431d-8099-13c4566eed90"}}},"callChainId":"89f85a04-1883-4997-b768-77901e62aab5"}}]}

No repository files, tests, or entry points are identified. Start by reproducing the AKS bot call flow from Postman and compare the working laptop with the failing desktop, including the certificate, ngrok address, and Azure configuration. Done means identifying the cause of MediaControllerConversationAddParticipantFailed or documenting the missing configuration needed to join the call.