Thank you Michael.

One upgrade purchased and installed.

Lately Windows 10 has been warning about downloading some other programs, which occurred with the upgrade.
Selecting "keep" permits the download, which is of course harmless with MoI4.

Then when some other programs are installed, including the upgrade, Windows 10 defender again warns, but still permits installation.

- Brian

ps, SanDisk has a new 1TB SSD, about the size of a thick credit card. (Costco).