Kofax VRS 5.1 has been succeeded by newer versions like VRS 5.2. If you are not restricted by specific legacy hardware requirements, it is generally recommended to use the latest version for better compatibility with Windows 11 and modern scanner drivers. Do you have a license key or a specific scanner model you're trying to pair this with?
VRS works with hundreds of scanner models from top brands like Fujitsu, Kodak Alaris, Canon, and HP, providing a uniform user interface across different hardware. System Requirements for Kofax VRS 5.1 kofax vrs 5.1 download
Windows 10, Windows 11, or Windows Server (check specific service pack compatibility). Kofax VRS 5