Install OpenSSL - a robust, commercial-grade, full-featured toolkit for general-purpose cryptography and secure communication.
Publisher’s description
What is OpenSSL?
OpenSSL is a free program for Windows from Shining Light Productions.
Installation and requirements
Official installers exist for 64-bit, ARM64 and 32-bit as EXE (Inno Setup) and MSI. The main installer is 326.3 MB. Installation asks for administrator rights. The installer supports unattended (silent) installation. An MSI package is available for deployment with Group Policy, Intune or Configuration Manager.
Updates and version history
The current version is 4.1.0, released on October 23, 2026. 7 versions are listed since January 31, 2026, each with links to its own installer files. The last update is less than a month old.
Pros / Cons
Pros
- Free to use
- Native ARM64 build for Windows on Arm
- MSI package for managed deployment
- Documented silent install
- Updated in the last two months
Cons
- Installation needs administrator rights
- Large download (326.3 MB)
In short: OpenSSL is a free Windows tool for 64-bit, ARM64 and 32-bit PCs. Administrators can deploy it unattended.
Is OpenSSL safe to download?
- The file is served by slproweb.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
C670E809BB7DAE85C54BCF734D4981D1523F1CB1B6B77947AC3E5DF46FF1CA48· Open the VirusTotal report for this hash - The link answered when we last checked it (October 26, 2026)
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 7 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 4.1.0Latest | October 23, 2026 | 326.3 MB | ARM64 MSI64-bit MSI64-bit EXE (Inno Setup)ARM64 EXE (Inno Setup) |
| 4.0.3 | September 29, 2026 | 263.4 MB | ARM64 EXE (Inno Setup)ARM64 MSI32-bit EXE (Inno Setup)32-bit MSI |
| 4.0.2 | August 25, 2026 | — | ARM64 MSI64-bit MSIARM64 EXE (Inno Setup)32-bit MSI |
| 4.0.1 | June 9, 2026 | — | ARM64 MSI32-bit EXE (Inno Setup)64-bit MSIARM64 EXE (Inno Setup) |
| 4.0.0 | April 17, 2026 | — | ARM64 EXE (Inno Setup)32-bit MSI32-bit EXE (Inno Setup)64-bit MSI |
| 3.6.2 | April 9, 2026 | — | ARM64 EXE (Inno Setup)32-bit EXE (Inno Setup)ARM64 MSI64-bit MSI |
| 3.6.1 | January 31, 2026 | — | 64-bit MSI32-bit EXE (Inno Setup)64-bit EXE (Inno Setup)ARM64 EXE (Inno Setup) |
Release cycle and support
| Release line | Released | Support ends | Latest version | Status |
|---|---|---|---|---|
| 4.0 | April 14, 2026 | May 14, 2027 | 4.0.3 | Supported |
| 3.6 | October 1, 2025 | November 1, 2026 | 3.6.5 | Supported |
| 3.5 (LTS)LTS | April 8, 2025 | April 8, 2030 | 3.5.9 | Supported |
| 3.4 | October 22, 2024 | October 22, 2026 | 3.4.8 | End of life |
| 3.3 | April 9, 2024 | April 9, 2026 | 3.3.7 | End of life |
| 3.2 | November 23, 2023 | November 23, 2025 | 3.2.6 | End of life |
| 3.1 | March 14, 2023 | March 14, 2025 | 3.1.8 | End of life |
| 3.0 (LTS)LTS | September 7, 2021 | September 7, 2026 | 3.0.22 | End of life |
Install from the command line
Silent install ›winget install --id ShiningLight.OpenSSL.Dev -escoop install main/opensslWin64OpenSSL-4_1_0.exe /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-Program files (.exe): openssl.exe
Related guide: How to use winget: install and update apps
Information
- Publisher
- Shining Light Productions
- Licence
- Freeware
- Price
- Free
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, ARM64, 32-bit
- Installer
- EXE (Inno Setup), MSI
- Version
- 4.1.0
- Released
- October 23, 2026
- Added to the catalogue
- January 31, 2026
- Versions listed
- 7
- Website
- slproweb.com
- winget ID
- ShiningLight.OpenSSL.Dev
- Scoop package
- main/openssl
- MSI product code
- {3A7C9215-13B0-43B1-BF3F-3859FA49D643}
Ratings and reviews
No reviews yet. Be the first to rate it.
Frequently asked questions
Is OpenSSL free?
Yes. OpenSSL is free to use.
Is OpenSSL safe to download?
The download comes from slproweb.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install OpenSSL with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can OpenSSL be installed silently?
Yes. The silent install page lists the exact command for each installer, including msiexec for the MSI package.
Does OpenSSL run on ARM (Windows on Arm)?
Yes, there is a native ARM64 installer.
Where can I download an older version of OpenSSL?
The versions page lists all 7 versions with links to their official installer files, back to January 31, 2026.