Users are unable to login to Service Catalog

Products

• CA Service Catalog
• CA Service Management - Asset Portfolio Management
• CA Service Management - Service Desk Manager

Issue/Introduction

Users are unable to login to Service Catalog. I had enabled SC and EEM integration. Same EEM is also used by ITPAM and APM and users are ableo to login to both of these application fine. If I disable the EEM and AD integration and use Internal Store for integration then SPADMIN is able to login in.
Error in the view.log when user login fails 
===================================
 [CEIAMAuthenticate] Exception in Authenticating java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 
at java.util.ArrayList.rangeCheck(Unknown Source) 
at java.util.ArrayList.get(Unknown Source)

Environment

Release:
Component: USVCT

Resolution

1. Make sure the same user is able to login to EEM using the Activedirectory Credentials 
2. If the user can login

• Stop the Service Catalog Service 
• Stop the  CA Directory - itechpozservice 
• Stop the CA iTechnology iGateway Service 
• Start the  CA Directory - itechpozservice 
• Start the CA iTechnology iGateway Service 
• Start the Service Catalog Service 

3. Clear the browser Cache 
4. Login to the Service catalog using Activedirectory Credentials