How to disable kerberos setting from Connect server

Hello Team,

I was trying to do settings of SSO through the console of local server using system user , just for checking i enabled the kerberos.But when i opened the browser again it is asking for the credentials shown in snapshot. So please can you help me to disable the kerberos without using the connect server local console which is opened through browser.

Attached the snapshot of both the pages 

1. Which was running fine before enabling the kerberos (Fine console.jpg)

2. Which is not running after enabling the kerberos.  (error console.jpg)