Hey first time poster long time reader. I am having issues extending the AD schema onto a Windows 2012 Server from a 2008R2 Domain Controller. As of now we have 3 bare metal servers in our environment. One is strictly a domain and dns server (2008R2), another is a Hyper-V Manager with 9 Win7 test machines for clients(2008R2), and our newest addition is a Hyper-V and Backup server (2012). We are trying to deploy a front end lync 2013 server as a virtual machine on the new server as well as an edge server to handle external communication. We have tried this before and are still encountering issues getting 2012 to talk to 2008R2. I have joined it to the domain and it is in the same forest, however I am unable to do a network backup of other computers from the 2012 machine. I am starting to think that their may be some group policy or firewall issues that may be preventing the two machines from communicating properly.
I am an enterprise admin, schema admin, and have granted myself full administrator control throughout our domain. I was wondering if their was some features or roles that I need to install to extend the schema to the new machine, and if you have any advice on something else that could be preventing them from talking. I have tried running adprep and many other things, but my boss is very hesitate to try anything drastic since our test environment is reliant on the server functioning. I was wondering if anyone had any suggestions. My primary job is Sharepoint Architecture, so any advice on how to get over this server hump would be much appreciated :).