~snip~
Do you have any other links? It's blocked on Mediafire look at the image below.

Can you re-upload the file to other hosting sites I suggest you upload it here zippyshare.com. and post it here or pm the link.
Thanks in advance...
I literally laughed out loud when I saw who posted the issue; "hey I know that guy," I said to myself. I'm at the office today, so I don't have time to try compiling the libsecp256k1-0.dll, and I don't have a Linux vm installed on my work machine anyway (time to fix that.)
Why not just install the copy from HCP to try? I think we already talk about this "libsecp256k1" from another thread here
https://bitcointalk.org/index.php?topic=5222986.0So, I think the copy from HCP includes the "libsecp256k1"