Operating System Requirements

The server must be running a functioning English-language version of one of the following Microsoft Windows OSs:

• Windows 2000 Server with Service Pack 1 or Service Pack 2 installed

• Windows 2000 Advanced Server with Service Pack 1 or Service Pack 2 installed (Microsoft Clustering Services must not be installed)

• Windows 2000 Datacenter Server with Service Pack 1 or Service Pack 2 installed (Microsoft Clustering Services must not be installed)

• Windows NT Server 4.0 with Service Pack 6a installed

While, technically, Windows service packs can be applied either before or after installing Cisco Secure ACS, if the service packs are installed before the Cisco Secure ACS software, the process will go more smoothly. If not, the Cisco Secure ACS installation program displays warnings that the required service pack isn’t present. If a service pack message is displayed, continue the installation, and then install the required service pack before starting user authentication with Cisco Secure ACS.