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Limit of RADIUS clients in Active Directory with IAS

The IAS (RADIUS) portion of AD has RADIUS clients for authentication. Is there a limit to how many RADIUS clients you can have when using AD along with IAS for authentication? I was adding another client and a box popped up and said: "You may have reached the client limit." The operating system is Windows 2003 Server.

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2003 Standard Edition supports a maximum of 50 RADIUS clients and 2 RADIUS server groups. To go beyond this, you'll need to deploy IAS on an Enterprise or Datacenter Edition server.

This was first published in December 2005

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