Is this an official OpenSSL installer?

No. This page links to a third‑party Windows build and provides setup guidance. We are not affiliated with the OpenSSL project.

Which Windows versions are supported?

Windows 10 and Windows 11 (64‑bit).

How do I verify the download?

Use certutil or PowerShell Get-FileHash to compute the SHA256 hash and compare it to the vendor‑published value. See the Verify Hashes guide on this site.

The system says libcrypto.dll is missing. What now?

Ensure you installed the x64 build on a 64‑bit system, add the bin folder to PATH, and install the Microsoft Visual C++ Redistributable if required.

Home › Win64 Prebuilt

Download OpenSSL for Windows (64‑bit)

Windows 10/11 x64 build. Verify the download, install, then add to PATH. Troubleshooting guides included.

Download Installer (Win64) Verify Hashes

Source: slproweb.com (Shining Light Productions). We are not affiliated with the OpenSSL project or the vendor.

Integrity and safety

Always verify the installer before running it. See Verify Hashes for certutil and PowerShell commands.
Download URL: https://slproweb.com/download/Win64OpenSSL_Light-4_0_0.exe
If the hash does not match the vendor’s published value, do not run the installer. Re‑download and re‑check.

File: Win64OpenSSL_Light-4_0_0.exe Version: 4.0.0 (installer) Arch: x86_64

Compatibility

Windows 10/11 (64‑bit).
May require the Microsoft Visual C++ Redistributable.
After install, add the bin folder to your PATH so you can run openssl from any terminal.

After you install

Open Add to PATH and follow the steps.
Open a new terminal and run openssl version to confirm.
If you see a libcrypto.dll or libssl.dll error, visit Fix DLL Error.

Frequently asked questions

Is this official?

No. This is an unofficial Windows‑focused site linking to a third‑party build and providing setup guides.

Where can I see the exact OpenSSL core version?

Install, then run openssl version -a to display the built version and configuration.

Can I use a portable ZIP instead?

You can, but we currently link only the Win64 installer above. For other formats, see the vendor page.

Does it support FIPS?

OpenSSL 3.x uses providers (including FIPS). Enabling FIPS depends on the specific module and configuration. Read the FIPS Notes.

Related guides

Verify Hashes for the Installer Add OpenSSL to PATH (Windows) Fix libcrypto.dll / libssl.dll errors OpenSSL FIPS Notes