You can do the following:
pkg> registry rm General
julia> ENV["JULIA_PKG_SERVER"] = ""
pkg> registry add General
Now it will update using Git which should be faster on windows. Only need to do this once.
You can do the following:
pkg> registry rm General
julia> ENV["JULIA_PKG_SERVER"] = ""
pkg> registry add General
Now it will update using Git which should be faster on windows. Only need to do this once.