Tag: Exchange 2019

How to Fix the access control defines the ObjectType {xxx-xxxx-xxx-xxxx} that can’t be resolved tab mailbox delegation at Exchange 2016 issues.

If you are trying to change mailbox delegation settings via Exchange Admin center and show the access control defines the ObjectType {xxx-xxxx-xxx-xxxx} that can’t be resolved tab mailbox delegation, don’t panic, today, I am going to how to fix it.