With NTLite 2025.10.10626 (latest update), trying to apply "Latest online updates" (including the MSIX/AppX runtimes NTLite suggests) to a Windows 10 LTSC 2021 image results in the MSIX/AppX runtimes not being visible in the pending tasks list. Additionally, there is a "Missing" (just the word "Missing") reported somewhere around the MSIX/AppX integration stage and the AppInstaller MSIX appears skipped (grey dot, not green).
I'm not sure whether the two problems are functional or visual only, nor whether they are related.
I'm not sure whether the two problems are functional or visual only, nor whether they are related.
