A customer of mine had a newly setup Windows Server 2012 R2 remote access server configured to use a static address pool. When opening up Remote Access Management Console they received the following error:
Settings for server cannot be retrieved. VPN is configured to allocate IP addresses using a static address pool, but no IP address ranges are configured.
My customer did not want to use a static address pool but instead use the existing DHCP server to provide IP addresses to remote access clients. To configure the remote access server to use the existing DHCP server, use the following command.
Set-VpnIPAddressAssignment -IPAssignmentMethod 'DHCP'
After using this PowerShell command, simply reopen the Remote Access Management console and the issue will no longer occur.