Half of the users in a group cannot receive the message

[khaledomara83]

we have an issue with two instances of company communicator that whenver we send to a group half of them are not getting it and we get the error below for the ones who cannot receive it

"Microsoft.Bot.Schema.ErrorResponseException: Operation returned an invalid status code 'Forbidden'
at Microsoft.Bot.Connector.Conversations.ReplyToActivityWithHttpMessagesAsync(String conversationId, String activityId, Activity activity, Dictionary2 customHeaders, CancellationToken cancellationToken) at Microsoft.Bot.Connector.ConversationsExtensions.ReplyToActivityAsync(IConversations operations, String conversationId, String activityId, Activity activity, CancellationToken cancellationToken) at Microsoft.Bot.Builder.CloudAdapterBase.SendActivitiesAsync(ITurnContext turnContext, Activity[] activities, CancellationToken cancellationToken) at Microsoft.Bot.Builder.TurnContext.<>c__DisplayClass31_0.<<SendActivitiesAsync>g__SendActivitiesThroughAdapter|1>d.MoveNext() --- End of stack trace from previous location --- at Microsoft.Bot.Builder.TurnContext.SendActivityAsync(IActivity activity, CancellationToken cancellationToken) at Microsoft.Teams.Apps.CompanyCommunicator.Common.Services.Teams.MessageService.<>c__DisplayClass3_1.<<SendMessageAsync>b__1>d.MoveNext() in C:\home\site\repository\Source\CompanyCommunicator.Common\Services\Teams\Messages\MessageService.cs:line 94 --- End of stack trace from previous location --- at Polly.Retry.AsyncRetryEngine.ImplementationAsync[TResult](Func3 action, Context context, CancellationToken cancellationToken, ExceptionPredicates shouldRetryExceptionPredicates, ResultPredicates1 shouldRetryResultPredicates, Func5 onRetryAsync, Int32 permittedRetryCount, IEnumerable1 sleepDurationsEnumerable, Func4 sleepDurationProvider, Boolean continueOnCapturedContext)
at Polly.AsyncPolicy.ExecuteAsync[TResult](Func`3 action, Context context, CancellationToken cancellationToken, Boolean continueOnCapturedContext)
at Microsoft.Teams.Apps.CompanyCommunicator.Common.Services.Teams.MessageService.<>c__DisplayClass3_0.<b__0>d.MoveNext() in C:\home\site\repository\Source\CompanyCommunicator.Common\Services\Teams\Messages\MessageService.cs:line 94"

attached the message delivery report

Message_Delivery.csv

[v-milibiswas]

Hello @khaledomara83,
Please check the permission policy Teams admin center
While deploying app globally, permission policy should allow the company communicator bot.
To do this, either “Custom apps” section should be “Allow all apps”
Or if “Custom app” section is “Allow specific apps and block others”, Add Company communicator user bot in the list
Or if “Customer app” section is “Block specific apps and allow others”, make sure company communicator user bot is not added to the list.
After following the above steps if your issue is still not solved. You can share your mail id, so that we can start the conversation internally.