It updated Libgcrypt to version 1.6.3 , which included a vital fix for CVE-2014-3591 , a vulnerability related to side-channel attacks.
Newer versions of Gpg4win (specifically 5.0.0+) require 64-bit systems and modern Windows versions like Windows 10 or 11. Version 2.2.4 is often compatible with older operating systems like Windows XP (SP3), Vista, and 7. gpg4win 2.2.4 free download
For most users, the official Gpg4win 5.0.2 (released in March 2026) is the best choice. It includes: It updated Libgcrypt to version 1