How do I install OpenSSL on Windows?

Download the Win64 installer, run it, and then add the OpenSSL bin directory to your PATH. Verify the download hash before you install.

How do I verify the download hash on Windows?

Use certutil or PowerShell Get-FileHash to compute the SHA256 of the installer and compare it to the published value.

Why does Windows say libcrypto.dll is missing?

This usually indicates a PATH issue, an architecture mismatch, or a missing Microsoft Visual C++ Redistributable. Install the correct runtime and ensure the bin folder is on PATH.

Does this site represent the official OpenSSL project?

No. This is an unofficial Windows-focused site. We link to a third-party Windows build and provide setup guides.

OpenSSL for Windows — Download and Set Up in Minutes

Get a Win64 prebuilt installer, verify SHA256 hashes, add OpenSSL to PATH, and fix common libcrypto.dll issues. Clear, fast, and safe.

Download OpenSSL for Windows (Win64) Verify Hashes First

We are not affiliated with the OpenSSL project. The installer is provided by a third party. Always verify file integrity before installing.

TL;DR: Download the Win64 installer, verify its SHA256, install, then add the bin folder to your PATH. If Windows complains about libcrypto.dll, check architecture and the MSVC runtime.

Everything you need for OpenSSL on Windows

Win64 Prebuilt

Grab the 64‑bit installer for Windows 10/11. Fast, safe, and up‑to‑date.

Verify Hashes

Use certutil or PowerShell to verify SHA256 before you run any installer.

Add to PATH

Run openssl from any terminal by updating your PATH safely.

Fix libcrypto.dll Error

Resolve missing DLL errors: PATH fixes, VC++ runtime, architecture match.

FIPS Notes

Understand FIPS provider basics in OpenSSL 3.x on Windows.

Quick start

Download the Win64 installer from the button above.
Verify the SHA256 hash (see Verify Hashes).
Install and note the installation path (e.g., C:\\Program Files\\OpenSSL-Win64).
Add the bin folder to PATH (see Add to PATH).
Open a new terminal and run openssl version. If errors appear, see Fix DLL Error.

OS: Windows 10/11 (64‑bit) Version: 4.0.0 installer Vendor page

FAQ

What is included? A Windows build of OpenSSL for x64. If you need to validate the exact OpenSSL core version, run openssl version -a after install.

Where are the hashes? We publish verification steps on the Verify Hashes page.

Is this official? No. This is an unofficial Windows-focused site. We link to a third-party build and provide setup guides.

Upcoming pages in this series

/win64-prebuilt.html — Download page with integrity notes and compatibility.
/verify-hashes.html — Hash verification on Windows (certutil, PowerShell).
/add-to-path.html — Add OpenSSL to PATH (user/system) with safety tips.
/libcrypto-dll-error.html — Fix libcrypto.dll/libssl.dll missing issues.
/fips-notes.html — FIPS provider overview for OpenSSL 3.x on Windows.

We will publish the pages one by one. Bookmark this site.