The only way is: 1. Mount Server Desktop Experience (the lesser Server Roles and Features the better) 2. Add all Client packages (or in EnterpriseS structure) 3. Add Client edition 4. Add License agreements 5. Change Branding 6. Change Key 7. Commit\Unmount image But, have a think: The LCU is for Server only.
How about? 21xxx --> 21xxx\21H2 SAC Client & ServerACor 19043 21H1 --> 19043\21H1 SAC Client & ServerACor (2022-12-13) 19043 21H1 + 21H2Enablement --> 19044\21H2 LTSC Client 20348 --> 20348\21H2 LTSC Server Q: Windows (11)?
Thanks. It is "permanent activation" alike Starter and hyper-v_server. The best of activation - if its Product policy suits your needs.
The last 20xxx ContainerOS Client build is 20313.1. Code: <package id="Microsoft-Windows-EnterpriseSEdition~31bf3856ad364e35~amd64~~10.0.20313.1" name="Windows EnterpriseS Edition" targetState="Staged" options="9"/> And 20348.11 LCU supports ONLY Server, ATM. And NO 20348 Client language package from UUP or Windows Update, ATM.
Fact: Windows soul is Product Policy. And Product Policy is determined by License in C:\Windows\System32\spp\tokens\skus. Q: What can we do with Client License on Server? A: It allows Client programs. And it won't affect "Windows Update" if the SKU structure is not changed (especially from 18362 forward). So what? Stop wasting time on Client without language pack. And try to make the most use of an existent full image.