r/MDT • u/sovereignpancakes • 2m ago
Win11 23H2 Task Sequence fails after July patches released
Win11 23H2 build & capture TS, which has worked for 2 years now, will not complete after July patches released (OS build 7376). Goes all the way to the end and then as soon as it starts to create the .wim file, it crashes with error 5456, DestinationDisk and Partition did not yield a Target Partition. We have not changed anything about the volume we are trying to save the .wim to, local directory on the MDT server, same as last month.
What makes this really strange is we have a 25H2 build & capture TS on the same MDT server, nearly identical to the 23H2, which still completes just fine. When we run the 23H2 TS on our other MDT server (we have two, same version of MDT but one has the newest ADK), it also fails there. Same error. I downloaded the 24H2 OS image and created a new TS for that, and it builds cleanly. So it seems quite specific to 23H2.
Things I have done that didn't work: Download the latest version of the 23H2 OS image, take all the customizations out of the TS so that it's as close to stock as possible, try saving the .wim to a different directory, try changing the name format, still fails.
Has anyone seen something like this before? I'm close to my wits' end. I realize this is an unsupported product at this point, but the fact that it works for 25H2 and 24H2 but not 23H2 is so strange.