Our environment has 3 servers. One running server 2008 standard. One running 2008 R2 hosting exchange 2010 and a new 2016 standard.
Our old 2008 standard which was the DC and GC has become unreliable so we decided to migrate to 2016. We installed server 2016, made it an additional DC and GC, installed DNS, DHCP and transferred all of the FSMO roles from 2008 to it. Everything is working great except Exchange.
If we power down the old 2008 server and boot up the 2008 r2 hosting exchange it will just sit there at "applying computer settings" forever. We have to reconnect the old server to the network for us to be able to log in on the exchange machine. Once we can log in the logs say that it couldn't find the old DC.
I have tried setting a static DC and GC in exchange to our new 2016 server, also set the DNS server to use the new server however it still wont work.
Currently in the logs I am getting event ID 2080 which says that it found the new DC. followed by another event ID 2114 (DSC_E_NO_SUITABLE_CDC)
I have no idea what is going on, is there something I am missing?
Any help would really be appreciated.
Best Answer
Well thank you for your help but I figured it out after a lot of digging and persistence.
It turns out that these problems were a symptom of a more serious problem. I noticed on the original DC under file replication that there were SYSVOL JOURN WRAP errors. After doing some research I used the automatic restore registry fix that can be found here.
http://www.squidworks.net/2011/09/ntfrs-journal-wrap-errors-detected-on-domain-controller/
as well as the Burflags fix found here.
http://www.vtechie.com/2013/09/resolving-sysvol-jrnlwraperror-in.html
After it replicated everything started to work correctly.
So in a nut shell I guess even though Active directory was showing the new server as a DC and GC, it wasn't truly a DC / GC until those files replicated and thus exchange would not recognize it as one.
Hope this helps anyone else with similar problems.