Anonymous Access: SharePoint 2013 Custom Application Page

Step 1: Open the Central Admin and go to Manage Web Application (under Application Management) .

Step 2: Choose the Web Application you want anonymous access for and click on Authentication Provider .



Click Default, 



Step 3: Check Anonymous Access and Click OK.


Step 4: Open Visual Studio, create New Sharepoint Project, and add Application Page in it .

Step 5: Now remove DynamicMasterPageFile="~masterurl/default.master" from aspx page .



Step 6: Change the Code in aspx.cs to UnsecuredLayoutsPageBase as below,

public partial class PageName: UnsecuredLayoutsPageBase
{
        protected override bool AllowAnonymousAccess
        {
            get
            {
                return true;
            }
        }

Step 7: Open the Page in Browser (No Login Pop-up will come).