![]() ![]() When a login prompt appears, and you don't enter the correct credentials or click Cancel, the following message appears in the Dev Toolbar console:Īfter an unsuccesful or canceled login attempt, in the Network tab HTTP Status code 401 (Unauthorized) is returned for default.aspx, with Initiator ScriptResource.axd?xxxx: If we get a login prompt while monitoring the Developer Tools Network tab, we see that no network traffic took place nor any console error appeared before the call that initiated the login prompt. Sometimes it happens after some time of user inactivity (for instance after 3 minutes), however the problem doesn't occur systematically. The problem happens when _doPostBack is called within the UpdatePanel, but not always. ![]() ![]() Our web part consists of an UpdatePanel and a number of Buttons with (server) click events, and a gridview with a SelectedIndexChanged event. The web application has been configured to use Windows Authentication (on-premise Active Directory). Since some time ago some customers complain that they get login prompts while using our webparts on a SharePoint 2013 web part page. ![]()
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