We've done all the prep work and have already installed one Windows 2008 R2 DC but its in our Forest root which has only a few user accounts and only a few server accounts. I now need to stand up a Windows 2008 R2 DC in our production Domain where all are Users, Workstations and Servers are. We currently have two Windows 2003 R2 DCs. Here is my concern. I recently stumbled across some default settings in Windows 2008 R2 and I have some concerns about downward compatibility with other servers and clients. Rather than try to explain it, it is clearly outlined in the article:
I don't know if should disable these settings like the article states or just leave the default. Would Microsoft design something that could break existing infrastructure? Our network is just about all Windows 2003/2008 servers and XP clients but there could be some older clients and servers. Not NT but old. Just wondering if anyone ran into a problem deploying Windows 2008 R2 DC's with these default settings.