Setup with one-way trust
If you run your system in a multi-domain environment, you can configure this setup with one-way trust. The system is installed on the trusting domain and users log in from trusting and trusted domains.
- Create a service account in the trusted domain. You can name it whatever you want, for example, svcMilestone.
- Add the new service account to the following local Windows user groups on the server running the system, in the trusting domain:
- Administrators
- IIS_IUSRS (Windows Server 2008, necessary for Internet Information Services (IIS) Application Pools)
- IIS_WPG (Windows Server 2003, necessary for IIS Application Pools).
- Make sure that the service account has system administrator rights on your SQL Database or SQL Server Express, either directly or through the BUILTIN\Administrators group.
- Set the identity of the ManagementServerAppPool Application Pool in the IIS to the service account.
- Reboot the server to make sure that all group membership and permission changes take effect.
Important: To add trusted domain users to new or existing XProtect system roles, log in to Windows as a trusted domain user. Next, launch the Management Client and log in as user of either the trusting domain or the trusted domain. If you log in to Windows as a trusting domain user, you are asked for credentials for the trusted domain in order to browse for users.

Example illustration of multi-domain environments with one-way trust:
- One-way outgoing domain trust
- MyDomain.local
- OtherDomain.edu
- Trusting domain user
- Management server
- Milestone service account
- Trusted domain user
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