Disable Dynamic Updates during feature update or in-place upgrade

Hello all:

I've been developing a script that upgrades older versions of Windows to the latest ESD used by the MCT, which currently has January's CU (KB5074109) installed. I was keeping an eye on C:\$Windows.~BT\DUImageSandbox during the process and noticed the several KBs including KB5074109 had downloaded. I want to prevent this as the whole point of using the latest ESD is to eliminate downloading a 4GB update because it's already included in the ESD.

I added /DynamicUpdate NoLCU to my setup command and ran another test. In this test, the KB still downloaded, then shrank (just as it did in the original test), then the sandbox folder cleaned itself up. The NoLCU test completed 15 minutes faster than the original test, though the result was ultimately the same: OS build/version and Get-HotFix matched.

Any ideas how to prevent the LCU from downloading? I'd prefer not to disable dynamic updates completely in case there are driver updates needed.


Thanks!

The Microsoft techcommunity or Q&A may have some information about whether it can or cannot be accomplished.


The size after installation may be able to be reduced: Dism exe /online /Cleanup-Image /StartComponentCleanup


or uninstalled: DISM Operating System Package (.cab or .msu) Servicing Command-Line Options