Assume that a user belongs to a child domain in a Microsoft Exchange Server 2013 environment. You try to create or update an In-Place eDiscovery & Hold search for the user by running the New-MailboxSearch cmdlet or the Set-MailboxSearch cmdletfrom the root domain. In this situation, you receive the following error message:
Errors: The Active Directory user wasn't found, /o=GM/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=9ca72100e77c493e96893e9bebf361b2-WZ46K6.
This issue occurs because the New-MailboxSearch and Set-MailboxSearch cmdlets access a writable Active Directory session that is restricted to the local domain controller instead of the global catalog. Therefore, users on the other domain controller cannot be retrieved.
To resolve this issue, install the following cumulative update:
2892464 Description of Cumulative Update 3 for Exchange Server 2013
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about the New-MailboxSearch cmdlet, go to the following Microsoft website: