I’ve had troubles with Julia 1.7.1 on Windows 10, so just now I downloaded and installed 1.7.2 - as a user, and checked “Add Julia to PATH” as recommended.
The first thing was to add a package or two:
Pkg> add "LinearAlgebra"
This started off OK, then suddenly crashed. And now I can’t start Julia at all. Attempts simply produce the popup window:
"Windows cannot access the specified device, path, or file. You may not have the appropriate permissions to access the item."
I get the same error if I run as administrator.
I see that a previous similar issue was related to the antivirus software CIsco Secure Endpoint, except that in my case Julia is not listed as a quarantined file - and in any case the file is still in its directory, it just refuses to be opened.