[Diablo II] Unable to install on Windows 10

Get the following windows error when trying to install: The parameter is incorrect.

Using Downloader_Diablo2_enUS.exe that I downloaded today.

Ran as admin and ran with compatibility mode. No go.

Using Windows 10 Pro 10.0.19042 Build 109042 x64

ive just brought D-2 aswell. having the same issues. was there a way around this?

Same thing. I get a windows dialog saying I don’t have necessary permissions. I AM the admin and I also tried running it as admin.