I'm trying to install the SP1 update to an RTM Exchange 2010 box. The Client Access Role Prerequisites are failing, complaining that KB979744 isn't installed.
I downloaded the update and tried to install it, however it will not install complaining that 'The update does not apply to your system'.
A discussion on TechNet indicates that I need .NET 2.0 or 3.5 installed (both are). Aside from that I've been unable to find anything helpful.
Hopefully someone has encountered this and knows how to get around it, don't really want to use up a support call on this.
This is on a 64-bit edition of Windows Server 2008 Datacenter (without Hyper-V) SP2.