UAC is the User Account Control. UAC is a Windows security protocol that has to be deactivated for Visual Matrix to be able to communicate with any needed Windows components as well as communicate with the Server or the Client computer.

Click here for the detailed process: https://support.microsoft.com/en-us/windows/user-account-control-settings-d5b2046b-dcb8-54eb-f732-059f321afe18