OpenSSL 1.1.1 and 3.0 for Windows

Table of Contents

About OpenSSL

OpenSSL is a popular open-source, publicly available software library that provides a robust, full-featured set of cryptographic functions and tools to secure communications over computer networks. When we build and ship FireDaemon Certify One, FireDaemon Fusion, and FireDaemon Lozenge we try to ensure it contains the most recent version of OpenSSL. We thought it would be useful to make our OpenSSL Binary Distribution available to you to download and use free of charge. The key advantages of using our OpenSSL Binary Distribution for Microsoft Windows over others that are available are:

  • No need to deploy various software tools to attempt to compile the source from scratch. Our build script is available for free too if you do want to compile OpenSSL yourself.
  • No external dependencies. There is no need to install or distribute the Visual C++ Redistributable Runtime (MSVC). There is an implicit dependency on the Windows Universal C Runtime (UCRT) which is included by default in all modern versions of Microsoft Windows.
  • Packaged for simple deployment and use case scenarios including standalone, embeddable, deployable, or portable
  • Digitally signed with our Extended Validation (EV) code signing certificate to avoid Windows SmartScreen warnings, and increase trust by Sectigo's authentication and verification procedures on us: FireDaemon Technologies Limited and validatable binary integrity to meet your compliance requirements.

Download OpenSSL

Below you will find pre-compiled OpenSSL executables (EXE) and libraries (DLL) for Microsoft Windows Operating Systems in the form of installer and ZIP files. OpenSSL can be used standalone or integrated into any Windows application. The installers, EXEs and DLLs are digitally signed with our Extended Validation (EV) code signing certificate. We do not have an EAR CCL ECCN for our Binary Distributions. This is intentional. You must seek independent legal advice before using/integrating/exporting our Binary Distributions in your products if you believe you are subject to export controls.

Download OpenSSL Binary Distributions for Microsoft Windows

OpenSSL 3.3.1 Windows Installer (x64)
Download OpenSSL 3.1 ZIP for Microsoft Windows
June 2024

SHA2-256 D0A09BD48D9E717852C024B22D5D1A14B6D88BBC21C3C4879C4FDC6D62533599
Git commit openssl-3.3.1-0-gdb2ac4f6eb

OpenSSL 3.3.1 ZIP File (x64/x86)

Download OpenSSL 3 Installer for Microsoft Windows June 2024

SHA2-256 DD4FC121DCFFA4BCB89012ACFF0304A4499B06DB4874289F871D9D7BA5BCF12F

Git commit openssl-3.3.1-0-gdb2ac4f6eb

OpenSSL 3.0.14 LTS ZIP File (x64/x86)
Download OpenSSL 3.1 ZIP for Microsoft Windows
June 2024

SHA2-256 35073B4956EAD392B33AE9DE68FCDB85A07EBA7959338FA43CCE1ADAEF7221D0

Git commit openssl-3.0.14-0-g9cff14fd97

OpenSSL 1.1.1w LTS ZIP File (x64/x86)

Download OpenSSL 3 Installer for Microsoft Windows September 2023

SHA2-256 1870B15BF6749E65FFBBADF52CDFF3EE0E9F02943550BF4395574BB432AF3EB8

Git commit OpenSSL_1_1_1w-0-ge04bd3433f

To calculate/verify the SHA2-256 checksums please use FireDaemon Lozenge!

OpenSSL maintains a list of 3rd-party maintained binary distributions of OpenSSL.

Please review our Release Policy before downloading and using this distribution.

OpenSSL 1.1.1y or later is only available to OpenSSL customers that have a Premium Support Contract.
We no longer supply OpenSSL 3.1 or 3.2 binaries. Please use the latest 3.3 or 3.0 LTS release. 1.1.1 is end of life.

Installing OpenSSL

Windows Installer

You can download the Windows installers found in the "Download OpenSSL" section above. Installation is straightforward. OpenSSL is installed into the following file system locations. These locations are specified during the build and follow OpenSSL's conventions.

%PROGRAMFILES%\Common Files\FireDaemon SSL 3

You can silently install OpenSSL with the following command in an elevated command prompt (noting APPDIR and ADJUSTSYSTEMPATHENV are optional):

FireDaemon-OpenSSL-x64-3.3.1.exe /exenoui /exelog fdopenssl3.log /qn /norestart REBOOT=ReallySuppress APPDIR="C:\Program Files\FireDaemon OpenSSL 3" ADJUSTSYSTEMPATHENV=yes

You can silently uninstall OpenSSL with the following commands:

:: To uninstall at an elevated command prompt, first verify the product GUID
wmic product where name="FireDaemon OpenSSL 3" get IdentifyingNumber

:: Then uninstall silently using msiexec
msiexec /x {6CE7A11C-A4C5-43BD-8A95-3232D72B95B5} /quiet /noreboot

:: You can also use the original FireDaemon OpenSSL installer
FireDaemon-OpenSSL-x64-3.3.1.exe /x // /quiet

:: Or uninstall using PowerShell
$app = Get-WmiObject Win32_Product | where { $ -eq "FireDaemon OpenSSL 3" }

Winget Package Manager

Instead of downloading and installing the Windows Installer, you can use the Microsoft package manager called winget. Winget is built into Windows 10 and 11 or can be installed manually. To install FireDaemon OpenSSL, simply open a command prompt on your computer then:

:: Search for FireDaemon OpenSSL
winget search FireDaemon.OpenSSL

:: Show the FireDaemon OpenSSL package contents
winget show FireDaemon.OpenSSL

:: Install FireDaemon OpenSSL interactively
winget install FireDaemon.OpenSSL --interactive

:: Install FireDaemon OpenSSL silently (default)
winget install FireDaemon.OpenSSL --silent

:: Show installed packages
winget list FireDaemon

:: Uninstall FireDaemon OpenSSL
winget uninstall FireDaemon.OpenSSL

ZIP File

Instead of using the installer or package manager, you can download one of the ZIP files found in the "Download OpenSSL" section above.  

  1. Follow the instructions below if you have downloaded one of the ZIP files above and want to deploy OpenSSL manually (e.g. on the local hard disk or a USB drive for a portable installation)
  2. Download the appropriate FireDaemon OpenSSL Binary Distribution ZIP file via the links above.
  3. Unpack the contents of the folder found in the ZIP file to a temporary directory (e.g. C:\Temp)
  4. Copy the contents (i.e. the files and directories contained within) of the x64 folder or x86 folder to your target directory (e.g. C:\OpenSSL)
  5. Copy the ssl folder and contents to the target directory (e.g. C:\OpenSSL).

The commands to copy the files correctly from the location where you unpacked the ZIP file (assuming C:\Temp) are as follows:

: For OpenSSL 1.1.1 LTS
cd C:\Temp\openssl-1.1

: For OpenSSL 3.0 LTS
cd C:\Temp\openssl-3.0

: For OpenSSL 3.3
cd C:\Temp\openssl-3

: Copy the binaries specific to your platform
: Copy 64-bit binaries
robocopy x64 C:\OpenSSL /E

: Or, copy 32-bit binaries. Don't copy both!
robocopy x86 C:\OpenSSL /E

: Copy the ssl folder
robocopy ssl C:\OpenSSL\ssl /E

Your directory structure should look as follows:

C:\OpenSSL>dir /b
To use OpenSSL, simply open an elevated Command Prompt (adjusting the path in OPENSSL_HOME to suit your manual installation):
: You can set OPENSSL_HOME=%~dp0 in a batch script for portable installs
set OPENSSL_CONF=%OPENSSL_HOME%\ssl\openssl.cnf
openssl version -a

To create a certificate signing request and private key using the same environment variables as above:

openssl genrsa -out server.key 4096
openssl req -new -key server.key -out server.csr -sha256
openssl x509 -req -days 365 -in server.csr -signkey server.key -out server.crt

OpenSSL Screenshot

Below is a screenshot showing the certificate signing request in an elevated PowerShell:

FireDaemon OpenSSL 3 Command Line

OpenSSL Documentation

Please refer to OpenSSL's documentation.

Checking SSL / TLS Certificate Validity with Certify One

FireDaemon Certify One allows you to audit, check, inspect, and validate SSL / TLS certificates and certificate chains. Fortify also has a browser-based TLS Encryption Check Tool available.

Compiling OpenSSL From Source

Release Policy

Whenever we release an updated version of FireDaemon Fusion, FireDaemon Certify One, or OpenSSL gets updated with security fixes, we will provide the latest tagged version of the OpenSSL stable branch. The currently deployed OpenSSL library commit versions are listed underneath the download links above. Commit is described viz:

git describe --always --tag --long --first-parent --dirty


We directly pull from OpenSSL's official GitHub repository.

Build Script

You can use our build script to create the binary distributions. The build script has the following dependencies:


The actual command line to build OpenSSL is as follows (where %toolset% is VC-WIN32 and VC-WIN64A respectively):

perl ..\Configure %toolset% no-asm no-ssl3 no-zlib no-comp no-autoload-config --api=1.1.0 --prefix="%installdir%" --openssldir="%commoninstalldir%" -DOPENSSL_NO_DEPRECATED

Integrating OpenSSL with Your Visual Studio Project

To use the headers and libraries present in OpenSSL in your Visual Studio project, you will need to configure the properties of your project.

Additional Include Directories

Prepend "C:\Program Files\FireDaemon Open SSL 3\include"; to Property Pages -> C/C++ -> General -> Additional Include Directories in your project per the screenshot below (adjusting the prepended path to suit your installation):

Visual Studio Project Property Pages Additional Include Directories

Additional Library Directories

Prepend "C:\Program Files\FireDaemon Open SSL 3\lib"; to Property Pages -> Linker -> General -> Additional Library Directories in your project per the screenshot below (adjusting the prepended path to suit your installation):

Visual Studio Project Property Pages Additional Library Directories

Privilege Escalation Mitigation

When building OpenSSL, the build scripts bake the default location of the library (ie. the installation directory) and the SSL configuration into the final product. By default, OpenSSL automatically loads the SSL configuration file from the default file system location. This leads to an easily exploitable privilege escalation scenario documented in CVE-2019-12572. Our build of OpenSSL mitigates this flaw using the following preventative measures:

  • The target directories we have chosen are Windows' default system program files directories assuming a 64-bit architecture with a shared configuration file directory common to both x64 and x86:
    • x64: C:\Program Files\FireDaemon OpenSSL, C:\Program Files\Common Files\FireDaemon SSL
    • x86: C:\Program Files (x86)\FireDaemon OpenSSL, C:\Program Files\Common Files\FireDaemon SSL
  • To mitigate security holes even on non-default installations, we build the library such that it doesn't automatically load the SSL configuration. Hence, when using the OpenSSL tools or the DLLs in your products you have to explicitly load the SSL configuration.
  • All FireDaemon software products that utilise OpenSSL initialise the OpenSSL library at runtime using a flag that prevents the loading of the default configuration.

Compatibility and Support Matrix

The table below provides a compatibility and support matrix, mapping specific compatible Microsoft Windows operating system versions to specific FireDaemon OpenSSL software versions.

OpenSSL Versions
OpenSSL 3.3, 3.0 LTS, & 1.1.1 LTS
Windows Operating System Version32-bit (x86)64-bit (x64)
Windows XP (1)

Windows Vista (1)

Windows 7 (1)

Windows 8 (1)

Windows 8.1 (1)

Windows 10

Windows 11

Server 2008 (2)

Server 2008 R2 (2)

Server 2012

Server 2012 R2

Server 2016

Server 2019

Server 2022

(1) Windows Desktop Operating System is End of Support

(2) Windows Server Operating System is End of Support

Compatible / SupportedThe software product is designed to be installed on the Microsoft Windows operating system version. The operating system version plus software version combination is actively supported by us on the proviso that the 32-bit (x86) version is deployed on a 32-bit (x86) operating system and the 64-bit (x64) version is deployed on a 64-bit (x64) operating system. Please see the License, Warranty, and Support section below.
Compatible / UnsupportedThe software product should install on the Microsoft Windows operating system version. The operating system version plus software version combination is not supported by us. This is typically due to the operating system version reaching End of Support.
Incompatible / UnsupportedThe software product should not or does not install on the Microsoft Windows operating system version or does not work. The operating system version plus software version combination is not supported by us.

License, Warranty, and Support

Our OpenSSL Binary Distribution is free to use and redistribute. Product use, redistribution, and warranty are governed by the OpenSSL License. If you have questions regarding OpenSSL, wish to report bugs, or require implementation guidance please consider joining the OpenSSL Community.


This product includes:

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