If your application, kiosk, or Outlook Add-in gives an error about “Proxy Authentication Required”, you need to make sure that you add www.eioboard.com or your server address if you are customer-hosted to your list of “safe sites” on your router or proxy server so your proxy no longer requires users to authenticate to access the site. Once you get this changed, the Test Connection button should return successful.
Active Directory
Using EIOBoard with Windows Authentication must consider effective Privileged Access Management (PAM) policies at the client, web application server, and domain levels. Otherwise, any website could impersonate the AD DS user through some form of credential theft. In most cases, the domain explicitly delegates trust between the web application server and workstations.
Reference: https://docs.microsoft.com/en-us/microsoft-identity-manager/pam/privileged-identity-management-for-active-directory-domain-services