sccm 2007 r3 I apologize for not having any tangable information but here it goes. I am using the unknown computer support for osd pxe boot and it works great in all location except one, the computer gets the pxe boot just fine, the user enters the pxe password and then the diaglog box just hangs at retrieving policy. I see no errors on the parent or the secondary, this works at all the other locations. I have no block certificates, I have excluded antivirus to anything SCCM on the secondary, we have tried this from mutiple subnets. I have verified the TS advertisement. I see the MAC and System UUID under the OSD/Unprovisioned Computers section I am at a loss.

have you tried deleting the record under the unprovisioned computers and restarting the windows deployment service on that pxe service point ? Step by Step ConfigMgr 2007 Guides | Step by Step ConfigMgr 2012 Guides | I'm on Twitter > ncbrady

When the pxe computer tries to retrieve a task sequence it's actually quering the primary site database. Verify the client has 1433 connectivity to the primary servers sql database.

What does the SMSTS.log file say while it is retrieving policy?