Hi Juan Antonio,

I'm assuming that your client machines are joined to domain and your K2 is setup with windows authentication.

To provide a seamless login experience for your users, you can add the K2 sites to the broswer's "Intranet Zone" and turn on the "Automatic logon only in Intranet zone" option. When the browser access the K2 site, it will automatically login on behalf of the current user. You can read more about the Internet Explorer feature here.

https://technet.microsoft.com/en-us/library/dd572939(v=office.13).aspx

JK.

Thank you very much for your answer....

I was do a research about this topic and i found this article from K2

http://help.k2.com/onlinehelp/k2smartforms/userguide/1.0.6/default.htm#authentication.html

This, explains that you must configurate the IIS of K2 server to can login with Windows User, this solution is different? or is other way to do it.

Thank you very much

Juan Antonio