Hello , I have created a claims based sharepoint application using ACS and ADFS but i have added multiple ADFS servers as Identity providers in ACS.Normally when we want to give access to a certain ADFS domain user to access the right we access the site using windows authentication at sharepoint server and grant permission by selecting the site actions tab on the site and search for the user using Active Directory and then add that user to the group. I want to do this programmatically without the need of going to that portal every time can you please help me in doing so Thanks , Seema Sharma seema sharma