Thanks for this, I can confirm what foxmsft930 said, it's a shame the documentation / changelog didn't make it more obvious that this was a breaking change in 2.32.

With Psexec 2.32 (build of 15 Jan 2021):

psexec \\RemoteSystem -h -u administrator -p password c:\demoprogram.exe

fails with:
Logon failure: the user has not been granted the requested logon type at this computer

BUT (with the additional -i parameter before the -h), this works.

psexec \\RemoteSystem -i -h -u administrator -p password c:\demoprogram.exe

Note the change ^

Thanks to all, but please make it obvious in future if introducing breaking changes in builds.