I have a 2008R2 server that has AD and Exchange 2010 installed on it. I have installed a 2012R2 DC. Replication has occurred. DHCP scope options point clients to new DC. FSMO roles have been transferred. DCIAG tests are all good. DCDIAG DNS test are all good.
I want to test shutting down AD/DS on the 2008R2 server before demoting. I cannot turn off the server because I need to keep exchange running.
I have tried to stop the "Active Directory Domain Services" but when I do this Outlook prompts users for login credentials and breaks access to the exchange management console. Not other services appear to be affected, only Outlook connection to the Exchange server.
Email does work as I test sending / receiving with OWA.
I have tried specifying the domain controller in EMC but that doesn't make a difference.
If I run get-adserversettings | fl
I still see the 2008r2 server listed as the default global catalog and default preferred domain controllers. Even though in the server properties in EMC it shows in the system settings tab the servers that I specified in the EMS command line to set them.
Also, since I am experiencing issues when stopping the AD service I concerned that I will experience the same issues in Exchange when I demote the 2008r2 box (that is also running the exchange)
Without shutting down the 2008R2 server or modifying the firewall how can it test as if it were demoted? Is there a service I can stop? Is there something I might be missing in the Exchange setup that I need to configure the new 2012R2 AD server information?