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Edit the target system in and add/edit the attribute Authentication Domain Name, it should contain the corresponding Domain Name of the target System. (To find out the Authentication Domain Name, you can open CMD on the domain controller and enter "whoami." The value before the backslash is the Authentication Domain Name.)
Open the tab System Feature and activate the function Authentication Provider active.
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Enable Windows Authentication in IIS for the site where the CoreOne Authentication Service according to this link: https://docs.microsoft.com/en-us/iis/configuration/system.webserver/security/authentication/windowsauthentication/
Step 6 (Optional) - Internet Explorer Settings
Usually this step is in the responsibility of the customer and should be done by him (usually through a group policy) and is only necessary for our internal systems:
Enable IWA for IE and Edge:
https://help.hcltechsw.com/domino/11.0.1/admin/secu_preparing_ie_for_adfs.html