An Active Directory Error 0X51 Occurred When Trying To Check The Suitability Of Server Exchange

Exchange 2. 01. 3 CU5 Organization preparation failure An Active Directory error 0x. DC1. domainexample. When you run setup to upgrade Exchange server 2. Active Directory to check schema version for possible need to update. In my case the problem was, that error 0x. I was checking what is happening. The first thing was to run netdom query fsmo command to gather which FSMO roles were placed on failing DC1. As it was during Schema version check, I was mostly iterested if Schema master role is present there. No I was wondering what is the problem. I went to OUDomain controllers in ADUC and checked DCs. I realised that Schema master role is running on non GC domain controller. An Active Directory Error 0X51 Occurred When Trying To Check The Suitability Of Server Exchange' title='An Active Directory Error 0X51 Occurred When Trying To Check The Suitability Of Server Exchange' />Solution To run setup successfully seize FSMO Schema master role on DC with GC in the same AD site as Exchange server. Issue with Domain Controllers An Active Directory error 0x51 occurred when trying to check the suitability of server DM3PR16A001DC06. The Driver In The First Accident Was Booked For here. NAMPR16A001. The Exchange Server is 2010. Exchange2010ActiveDirectoryerror0x51.