Additional Microsoft Defender tools and services that provide security across various platforms and environments
Is there some reason that you mention the Smart App Control and tagged this as a security question?
I was able to install that app on both Win 10 and 11. And I enabled Smart App Control and it still worked.
Have you applied all of the outstanding Windows Updates?
Were you doing something that might have deleted or updated files in C:\Program Files (x86)\Sailwave?
Did you install some other software recently?
Your easiest resolution might be to reinstall the software. First back up all of your data files to some backup folder. Then uninstall the app. Reboot. Then reinstall.
Please note that I do not have any experience with that program.