SharePoint Website – Login Dialog Fix

Problem: Windows user get Login dialog again and again when visiting the page with custom webparts, even when they are logged into the site.

Solution:
1. Open Computer Management and select Users.
2. Double click the user and select Member Of tab and add WSS_WPG.



This will add user to WSS_WPG group and it should solve the problem.

Note: Removing users from WSS_ADMIN_WPG will hide Site Actions from the website.