I was unable to post originally with this description included.
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This scenario may have been missed during testing phase of building the 2021 installs. Directly from the site (fails if you choose offline as well), the 32 bit version of installer(s) when run on a 32bit windows 10 controller host and does not have package manager installed prior to installation, fails. See all screen shots. Every installer I have tried fails when trying to install NI Package Manager first. I have not found away around installing the package manager. We would like all our machines to run 2021. I could just move the RTE out into some location and setup the application path if this will work. Please advise.
See this link. Basically as soon as you have the NI MDF Component 20.7 installed, you can not create installers that still install on pre Window 10 systems including 32-bit systems. And there is to my knowledge no way to install LabVIEW 2021 without getting that component installed.
While Windows 10 can still be installed as 32-bit system, it is pretty much never done anymore, so removing support for 32-bit installs was considered a valid option.
To clarify, that is intentional as NI dropped support for all 32-bit operating systems after May 1, 2021, including Windows 10. You'd need to use a version of NI software that is 20.7 or older to install on a 32-bit OS. Note that 32-bit operating system support was dropped, but 32-bit applications (on a 64-bit OS) will be supported for a long time.
More details here:
Correction - the above should be: You'd need to use a version of NI software that is 20.5 or older to install on a 32-bit OS.