Hello,
I have added a process that sends an email to a user from an admin when a new case is created. The process get's stuck with the following error:
Plugin Trace:
[Microsoft.Xrm.Sdk.Workflow: Microsoft.Xrm.Sdk.Workflow.Activities.SendEmail]
[SendEmailStep1: Send an email when a case is opened. ]
Error Message:
System.ServiceModel.FaultException`1[Microsoft.Xrm.Sdk.OrganizationServiceFault]: User does not have send-as privilege. (Fault Detail is equal to Exception details:
ErrorCode: 0x8004480D
Message: User does not have send-as privilege.
TimeStamp: 2021-07-26T15:35:58.8593521Z
--
Exception details:
ErrorCode: 0x8004480D
Message: User does not have send-as privilege.
TimeStamp: 2021-07-26T15:35:58.8593521Z
--
).
Both accounts (to and from) are assigned the system administrator role so they both have all permissions.

Are there some other settings I am missing for these accounts?
Thanks,
Nicholas Ishankov