The MCR has a lot of prerequisites on the system where it should be installed:
1. W2k8 OS
2. WDS should be installed before enabling MCR
3. IIS and WEBDAV, ISAPI ext and IIS6 management compatibility must be installed before
4. UDP Ports should be configured on Firewalls (Soft+Hardware) for OS deployment with Multicast
5. Bits should be configured before enabling
6. Distribution Point (not Branch and not Server share) should be configured before enabling MCR (MCR cannot be enabled if this role is not installed!)
7. Windows Firewall settings has to be adjusted to allow connection of clients
8. Local Security (GPEDIT.MSC / SEPOL.MSC) has to be adjusted when running SCCM on a DC!
9. OS packages should be activate for Multicast and deployed to the MCR DP after enabling MCR!
10. Verify that the MP has signed the MCR. Check SignedSerializedMCSkey in Registry section of MCS. It should not be empty otherwise MCR will not work in your environment!
ON other server:
11. Healty SCCM primary Server with MP is the first preliminary as the MP is responsible for the signing of the Role!
12. DHCP Service should be configured for dyn. Multicast client support only if you not use the static configuration within SCCM or WDS for Multicast clients
13. IPHelper should be configured in segmented networks to reach the WDS,PXE Server
OPTIONAL INFORMATION
ADD Network Access Account User Account to the PXE share with read rights to all folders.
=> After configuration of the ACL right for the Network Access Account deploy your WinPE images only to the PXE Share
and not as always suggested also to "normal" package shares! During the Setup of the Role the Network Access Account will not be added to the PXE share!