Before the server running Routing and Remote Access can authenticate domain accounts, it must be registered in Active Directory using an account with domain admin permissions.
- Log on to the computer with an account that has domain admin
- Launch the Active Directory Users and Computers MMC snap-in,
and then double-click the domain name.
- Double-click the Users folder, and then double-click the
RAS and IAS Servers security group.
- Select the Members tab, and add the server to this
group. You will receive a message informing you whether
registration is successful.