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I am attempting to automate OS installations using SCCM 2012 R2 (MDT). Clients are failing when the PE attempts to contact the SCCM server as the address is being specified as instead of

If I press F8 when PE gets the error I can see the SCCM server as so I know it's available via this path.

How do I set this value in the task sequence manually or on the fly in PE?

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Have you tried setting _SMSTSMP and _SMSTSMPPort as variables in the task sequence? See this: – Brad Bouchard May 14 '14 at 14:18
Those look to be read-only. – ethrbunny May 14 '14 at 14:28
Crap... I just did MDT training with an MS consultant and I know we covered this. Let me ping him by email and see if he can give me a quick answer. Stand by. – Brad Bouchard May 14 '14 at 16:08
Can you do an ipconfig from PE and see if you have multiple DNS suffix search lists? – Brad Bouchard May 14 '14 at 19:25
ipconfig /all shows only one entry for 'dns suffix search list'. The issue is that PE is looking for 'server.domain-name' instead of ''. The domain name isn't in DNS anywhere - it's just my machine. The entry is available though which is why I'm hoping to update the PE settings to use it instead. – ethrbunny May 14 '14 at 19:32
up vote 0 down vote accepted

There isn't a way to change this setting in the task sequence or on the fly in PE. When PE is created it will look to see how the MP/SCCM server is publishing its name to AD.

What you could do is enter a static IP and give PE the DNS Suffix. Even if you're running DHCP you can boot to PE, hit F8, do an ipconfig /all, record the IP information then choose to set a static IP and place the IP, Subnet, gateway and DNS Suffix on this same range allowing you to try to hit a custom DP/SCCM server. Again though, it will depend on how SCCM is publishing to AD.

The short answer is no, but as always there is an alternative.

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