When installing MIM 2016 v4.4.1542 Hotfix, we were getting the following error:
Calling custom action Microsoft.IdentityManagement.ServerCustomActions.CustomActions.AddServiceToPerformanceMonitors
Adding FIMService account to 'Peformance Monitor Users' group
Property name = 'ServiceAccount', value = 'domain\msvc'
Domain AD Found
Exception Thrown by custom action"
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation ---> System.UnauthorizedAccessException: Access is denied.
We resolved this by temporary add the MIM Portal Machine account to Domain Admins. This allowed us to successfully install v4.4.1642