I have set the k2 website under the Default website in IIS.
This default application is running under the Local System account which also access to the K2 databases.
Now, when I browse to the InfoPathService.asmx, I get an error which states:
"You are not authorized to view this page
You do not have permission to view this directory or page using the credentials that you supplied. "

Why might this be happening?

Thanks for your help.