Windows 2008 R2 Domain Support?

Currently, I have OpenFire 3.6.2 running on my Windows 2000 level domain, on a Windows 2003 box. I am hoping to upgrade to a Windows 2008 domain as soon as I get this sorted out. I’ve created a testbed, with a copy of my Openfire machine, but with 2 new domain controllers both Windows 2008 R2 based. When i tried launching Openfire 3.6.2 an error was produced. Instead of capturing the error and posting it here, I decided maybe it was best to upgrade to Openfire 3.6.3 at this point. After doing so, when i launch openfire 3.6.3 on this server, no error is produced, but i cannot get into the web interface to manage it. Additionally, I put spark2.5.8 on one of the testbed dc’s, and attempted to connect to the openfire server and it does not find it. Any suggestions as to why this would happen?