Cisco AnyConnect VPN-Computing Services - Carnegie Mellon University

Cisco AnyConnect VPN Client

The Cisco AnyConnect VPN Client is desktop software that secures traffic between your computer and restricted campus services. With the Cisco AnyConnect VPN Client software running in the background, network traffic is automatically routed and encrypted using Datagram Transport Layer Security (DTLS) over SSL or Transport Layer Security (TLS).

Installers are available for Windows and Macintosh operating systems as well as Apple mobile devices.

Note:  Please be aware that Cisco VPN is not supported for Linux.  The software is available for use, however documentation and support for installing or using the application are not offered by the Computing Services Help Center.

IMPORTANT! Windows 8.1 Known Error and Workaround

On Windows 8.1 after an update and reboot, the AnyConnect system tray client will launch and run without error. However, when attempting to make any connection via the client software the error message "Failed to Initialize Connection Subsystem" appears. No connection is possible. Complete the following steps to apply a fix from Microsoft:

  1. Visit the Microsoft Support page for this problem at
  2. Scroll to the Known Issue section and click the Fix It (Microsoft Fix it 51033) button under the "Enable this Fix" column.
  3. Download the installer, run it, and follow the instructions to apply the fix.

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Contact the Help Center
Phone: 412-268-4357 (HELP)