Incorrect permissions in the Active Directory (AD) can lead to Agent login problems.
This can occur due to AD permission issues. Use this information in order to troubleshoot the issue:
Agent Desktop Trace Settings
If these steps do not resolve the problem, set the trace and gather logs for Cisco Technical Support to review.
In order to do this, set the trace level to 204 in this file:C:\Program Files\Cisco\Desktop\config\fastcalllocal.iniSet the agent.dbg trace Size=30000000 (default is 300000):[Program Log]Path=..\log\agent.logSize=300000[Debug Log]Path=..\log\agent.dbgSize=30000000Level=204