This problem occurs if, with Multilevel Administration (MLA) enabled, the user logs in with the Windows account login instead of the Cisco CallManager administrator account information.
If MLA is enabled, use the Cisco CallManager administrator account to log in rather than the Windows login. Also, there is Secure Connection check box on the login window. Log into the Real-Time Monitoring Tool (RTMT) when this is checked. For related information on RTMT, refer to Real-Time Monitoring Configuration.