In a temporary environment (]activate --temp) install DependencyWalker.jl and Ipopt_jll.jl
]add DependencyWalker Ipopt_jll
(you may get an error here, ignore it) then run
using DependencyWalker, Ipopt_jll
you should get an error here, that’s ok, it’s what we want, then run
Library(raw"C:\Users\liuwa\.julia\artifacts\fff13fce0db4ed5379a0eeb73b6047a39b950e9d\bin\libipopt-3.dll")
This should show which library is missing. Unfortunately Windows isn’t very collaborative: it knows something is missing, but it wouldn’t tell you what 