Core Issue
After Internet Information Services (IIS) is restarted, the Cisco CallManager user login authentication fails. The Cisco CallManager user cannot log in from the CallManager user logon page with correct user ID and password after some idle period time. No users can log in thereafter. The problem is observed in Cisco CallManager 3.3(2) and 3.3(2).
Resolution
These symptoms are addressed in Cisco bug ID CSCdz56517: CCMUser logon authentication failure in case of Active Directory (AD).
It occurs when the connection to the Lightweight Directory Access Protocol (LDAP) server fails. This issue has been corrected in Cisco CallManager 3.3(3). The workaround is to restart IIS on Cisco CallManager.
Alternatively, upgrading the Cisco CallManager to version 3.3(3) helps resolve the issue.
For more information, refer to the Resolved Caveats for Cisco CallManager - Release 3.3(3) section of Release Notes for Cisco CallManager Release 3.3(3).
To address similar issues, refer to these Cisco bug IDs:
- CSCea53844: Extension Mobility stops working
- CSCeb15462: Cisco CallManager AD integration - CallManager fails to set cookie for ASP page
- CSCeb30354: Extension Mobility login
- CSCec09214: Corporate Directory fails with IIS error
