Hello Shakara Partinger,
I'd like to help, but Examplify is a third-party application developed by ExamSoft, not a Microsoft product. The error you're seeing is generated by Examplify's own installer, so this falls outside what I can advise on from the Microsoft side. Pointing you toward Windows-level changes that ExamSoft hasn't verified could also risk making things worse on an exam machine.
For this, ExamSoft's official support portal would be the place, as they handle installation issues specific to their software.
Hope that helps point you in the right direction.