Just searching for a “julia.exe” may bring up the proper path to yours.
Tried it here, used Windows Explorer, selected C:\, entered julia.exe in the search field, waited quite a while (~2min) and my (multiple) pathes to a julia.exe came up.
In general: Julia is a young language (still), the integrated developing environment(s) (IDEs) are still younger, compared to other worlds like python or R. This fact requires some patience and personal initiative from us users and developers to work around some of the still existing issues. But be assured it will be rewarded! (just saying in case you are already loosing some patience).