@ewilsonWe have successfully authenticated using grant-type as Implicit, but eventually when trying to post message to a particular channel facing this issue.
Can you please suggest what could be the reason for this,
If possible help with the App registration and Permission step or screenshots to be sure that the configurations done are correct. As per the documentation and Azure Ad team, we need a delegated token to post message to channel and for that the grant_type in the authentication request should be Implicit, but in the "Microsoft Graph -Authentication'" VBO even in delegated access token page grant-type being send in the request is "grant_type=password".
Please advise,
Thanks & regards
Deepti
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Deepti Gupta
Application Developer
IBM
UTC
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