BO 3.1 WinAD authentication failed error (FWM 00006)

Hi,

I have a BusinessObjects Server with 3.1 SP1 and I am getting the following error mesage in eclipse console  when trying to login with Windows AD:

Here is the code used to connect to BO using Windows AD :

         ISessionMgr sessionMgr = CrystalEnterprise.getSessionMgr();

         enterpriseSession = sessionMgr.logon(bOuser,

              bOpassword, bOCms, "secWinAD");

And here is the error message:

Account information not recognized: Active Directory Authentication failed to log you on. Please contact your system administrator to make sure you are a member of a valid mapped group and try again. If you are not a member of the default domain, enter your user name as UserName@DNS_DomainName, and then try again. (FWM 00006)

I worked with other Authentication methods like Enterprise but  this method (WindowsAD) is not working. I tried all the solutions given in KBA's and blogs.

Can anyone please help me to resolve this issue.

Details:

BO 3.1 SP1 

Eclipse

SAP JVM

Windows server 2003