OpenSSL-1.1.0 require the NASM http://www.nasm.us/ for building assemble codes as described in https://github.com/openssl/openssl/blob/1bfb7860cb81cf6431308c244a4967e41806a919/NOTES.WIN#L21-L24 It also needs for Node build after upgradeing OpenSSL-1.1.0. Please install it on the all Windows machines for ci checking and release building. The current latest stable version is 2.13.03.