Windows AD SSO not working silently

Hi,

I am configuring SSO using windows AD, as of now I am able to login to client and BI launchpad using Windows AD authentication successfully, but silent authentication is not working when I enter url in web browser.

when I check the log files in 'stdout.log' in tomcat it's giving below message.

2014-07-29 16:56:09 Commons Daemon procrun stdout initialized

com.businessobjects.webpath.rebean3ws.Activator

Debug is  true storeKey false useTicketCache false useKeyTab false doNotPrompt false ticketCache is null isInitiator true KeyTab is null refreshKrb5Config is false principal is null tryFirstPass is false useFirstPass is false storePass is false clearPass is false

        [Krb5LoginModule] user entered username: mpopuri@DOMAIN.LOCAL

Acquire TGT using AS Exchange

principal is mpopuri@DOMAIN.LOCAL

EncryptionKey: keyType=23 keyBytes (hex dump)=0000: C9 AF 52 43 71 7A 7A E8   B9 45 36 06 3C AC A4 C8  ..RCqzz..E6.<...

Commit Succeeded

I tried both using keytab and also including service account password in Tomcat properties (Java Options).

Please help me to troubleshoot this issue.

Thanks,

Mani