Problems installing LYNC on non-domain controler

active-directorylync

I have two servers in this set up. AD and EX, the domain is called mydomain.net

  • The AD is a Windows 2008 Server (32 bit) with Active Directory
    installed
  • AD only has it's own ip in the DNS-servers list
  • AD.mydomain.net does resolve correctly in the dns
  • EX is a Windows 2008 R2 that is connected to the mydomain.net-domain
  • EX only DNS server is the ip of the ad.mydomain.net
  • There are no firewalls running between the two servers

When trying to install Lync 2010 on the EX server I get the following error
"Not available :Failure occurred attempting to check the schema state.Please ensure Active Directory is reachable."

I can control the AD from EX, also login to it and do successful checks like 

netdom query /domain:mydomain.net fsmo

…that resolves correctly

I suspect there is something fundamentally wrong with my setup, maybe Lync need a 2k8 R2 ad?

Best Answer

I had to obtain and run the extadsch.exe from the Microsoft System Center 2012 Configuration Manager on my Domain Controller.

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