Multicast session fails to open on secondary site server.

Please note that Standard distribution points that are configured as server site systems support multicast for the operating system deployment feature. Branch distribution points and standard distribution points that are configured as server share site systems do not support multicast

So how Please let me know you configuration and which version of Configuration Manager you are using

FYI also please check Prerequisites for Multicast for Operating System Deployment
http://technet.microsoft.com/en-us/library/cc161876.aspx 

Running System Center 2007 R2.  The secondary site servers are setup as site systems and are standard distribution points.

Please note the following:

1- Windows Server 2008 must be running on the distribution point enabled for multicast.
2- The Windows Deployment Services for Windows 2008 must be installed before multicast is enabled on the distribution point server.
3- must be installed before multicast is enabled on the distribution point server. ISAPI extensions and IIS 6 management compatibility must be installed.
4- Network firewalls must be enabled so that UDP ports used by multicast.
5- Operating system deployment package transfer using IIS requires that Allow clients to transfer content from this distribution point using BITS, HTTP, and HTTPS (required for device clients and Internet-based clients)  be enable.

Please check if you have any errors in the following logs:
1- McsSetup.log
2- McsMSI.log
3- McsExec.log
4- McsISAPI.log
5-McsPrv.log
6-McsMgr.log

Double-checking a previous question, how can I if a distribution point is configured as a server share site system?  I don't think it is based on what I've seen, but I want to double-check.

Check Site System Role

Unfortunately I have found nothing in the log files that signify a problem with multicast.  Additionally, a prerequisites.

can you send logs file to me?

I'll check and update you soon

Is there any specific error or failure? If yes, please let me know the detailed information.

Please let me know your configuration of multicast.

Please collect the smsts.log from the secondary site client for me to do further analysis.

The log files have been uploaded.  A correction to a previous message is that all prerequisites have been met.

I have no restrictions on multicast traffic.

The error on screen is: "Task Sequence: Base Windows 7 Enterprise x64 has failed with the error code (0x80004005). For more information, please contact your system administrator or helpdesk operator."
SCCM-Logs.zip

Please let me know your configuration of multicast ??

OK I understand that all prerequisites are met. let me check log file and I will update u

I have a routing configured on a Cisco 3750.  The core router is a Cisco 6500, which is referred to in the ip  pim rp-address.

ip multicast-routing distributed
ip multicast multipath
ip multicast route-limit 1000 900
ip pim rp-address 172.20.255.1
ip pim register-rate-limit 10

Well, from the above logs, we can see that when the SCCM client access the DP WSCCM1.COLLEGE.MPTC.TECH to perform a multicast download but get an access denied error. Well, in this case, I’d suggest you check:

1. Check if WSCCM1.COLLEGE.MPTC.TECH has been configured as protected DP.
2. Check the BIOS clock on the machine in secondary site and make sure there is no time skew between the client and the target DP.
3. We may reconfigure the multicast DP and package per the following article:

http://blogs.msdn.com/b/steverac/archive/2008/10/19/setting-up-multicasting-in-sccm.aspx

4. Also go to WSCCM1.COLLEGE.MPTC.TECH We may look inside the IIS log of WSCCM1.COLLEGE.MPTC.TECH, and search for the client (the client in SCCM secondary site) IP 172.18.10.50. Then check what’s the returning IIS error code.

Good News, please let me know if you need more help