The issue is that SAMSON was installed as Administor. Can you please try to activate User Access Control (UAC) so that Windows does not install SAMSON as admin? Here's a link about how to do that: https://www.technipages.com/windows-enable-disable-user-account-control-uac
Please set UAC to e.g. "Always notify" (you can set it back to the previous setting afterwards).
Then, please restart your computer, and install SAMSON again.
Please let me know how this goes.