How To Install OpenSSL on Windows

Source： https://tecadmin.net/install-openssl-on-windows/

OpenSSL is a full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. It is licensed under an Apache-style license. This tutorial will help you to install OpenSSL on Windows operating systems.

Step 1 – Download OpenSSL Binary

Download the latest OpenSSL windows installer file from the following download page. Click the below link to visit OpenSSL download page:

http://slproweb.com/products/Win32OpenSSL.html

Step 2 – Run OpenSSL Installer

Now run the OpenSSL installer on your system. The OpenSSL required Microsoft Visual C++ to be installed on your system. If your system doesn’t have Microsoft Visual C++ installed, the installer will show your message like:

Click Yes to download and install required Microsoft Visual C++ package on your system.

Then again run the OpenSSL installer and follow the wizard.

Step 3 – Setup Environment Variables

Now set the environment variables to function OpenSSL properly on your system. You are required to set OPENSSL_CONF and Path environment variables.

set OPENSSL_CONF=C:OpenSSL-Win32inopenssl.cfg
set Path=......Other Values here......;C:OpenSSL-Win32in

Set OPENSSL_CONF Variable:

Set Path Variable:

Step 4 – Run OpenSSL Binary

Open a command prompt and type openssl to get OpenSSL prompt. Then run version command on OpenSSL proper to view installed OpenSSL version.