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The CSAuth service on CiscoSecure ACS for Windows crashes with the CSAuth service terminated unexpectedly error message

Core issue

This issue occurs due to the presence of Cisco bug ID CSCeh35648.

The CiscoSecure ACS CSAuth process can restart for no apparent reason. The process can do this up to a few hundred times a day, regardless of the load.

This issue is seen when CiscoSecure ACS for Windows version 3.2 or 3.3 runs on a Windows 2000 server with SP4.


In order to resolve this issue, download CiscoSecure ACS 3.3.3. The bug is fixed in this version.

Problem Type

Troubleshoot software feature

Product Family

Cisco Secure access control server


Crashes / reboots / traceback




CSAuth service terminated unexpectedly

Cisco Secure Access Control Server (ACS)

Cisco Secure ACS for Windows

Third Party Software


Features & Tasks

Access Control Server (ACS)

Version history
Revision #:
1 of 1
Last update:
‎06-18-2009 03:57 PM
Updated by:
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