Hello We are presently running our SCCM 2007 R3 on a Windows 2008 SP2. Our domain is Windows 2003 SP2. We are now planning a domain upgrade to Windows 2008. The question is, does SCCM 2007 R3 has any issues with Windows 2008 R2 domain? All our clients are either Windows XP SP3 or Windows 7. If there is any incompatibility we might have to upgrade our AD to Windows 2008 SP2. Regards Umamaheshwar