There are many ways to use existing Windows account credentials in ePO - On-prem.
You must have first prepared your server for Windows authentication.
How you configure these settings depends on several issues:
Do you want to use multiple domain controllers?
Do you have users spread across multiple domains?
Do you want to use a WINS server to look up which domain your users are authenticating against?
Select Menu → Configuration → Server Settings, then select Windows Authentication from the Settings Categories list.
Click Edit.
Specify whether you want to use one or more domains, one or more domain controllers, or a WINS server.
Domains must be provided in DNS format (for example,
internaldomain.com). Domain controllers and WINS servers must have fully qualified domain names (for example,dc.internaldomain.com).Note
You can specify multiple domains or domain controllers, but only one WINS server. Click + to add more domains or domain controllers to the list.
Click Save when you are finished adding servers.
If you specify domains or domain controllers, the ePO - On-prem server tries to authenticate users with servers in the order they are listed. It starts at the first server in the list and continues down the list until the user authenticates successfully.