While FlexiSign Pro 8.1 was originally designed for older systems, users have successfully applied patches to run it on Windows 10 and Windows 11. Operating System Compatibility Status Required Action Fully Native Standard installation. Windows 7 Compatible

If you are looking for legitimate updates or ways to make version 8.1 work on newer systems, here are the official and community-recommended steps: Official Updates and Drivers Service Pack for 8.1v1 : The last major official update for this version was the Service Pack for 8.1v1