I have a modal window which gives me a Server Error in '\' Application when I click it.

The .aspx looks like this:

<%@ Assembly Name="$SharePoint.Project.AssemblyFullName$" %>
<%@ Import Namespace="Microsoft.SharePoint.ApplicationPages" %>
<%@ Register Tagprefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint,     Version=, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register Tagprefix="Utilities" Namespace="Microsoft.SharePoint.Utilities" Assembly="Microsoft.SharePoint, Version=, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register Tagprefix="asp" Namespace="System.Web.UI" Assembly="System.Web.Extensions, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35" %>
<%@ Import Namespace="Microsoft.SharePoint" %>
<%@ Assembly Name="Microsoft.Web.CommandUI, Version=, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="ChangeEmail.aspx.cs" Inherits="GOToolkitFeatures.Layouts.ToolkitTilskud.Notification.ChangeEmail" DynamicMasterPageFile="~masterurl/default.master" %>

<asp:Content ID="PageHead" ContentPlaceHolderID="PlaceHolderAdditionalPageHead" runat="server">

<asp:Content ID="Main" ContentPlaceHolderID="PlaceHolderMain" runat="server">

<asp:Content ID="PageTitle" ContentPlaceHolderID="PlaceHolderPageTitle" runat="server">
Application Page

<asp:Content ID="PageTitleInTitleArea" ContentPlaceHolderID="PlaceHolderPageTitleInTitleArea" runat="server" >
My Application Page

And this is the .js where it's called from:

function ChangeEmailAction(pageUrl) {

var options = {
    title: "Skift email",
    url: pageUrl + "/_layouts/15/toolkittilskud/Notification/ChangeEmail.aspx",
    height: 600,
    width: 800,

SP.SOD.execute('sp.ui.dialog.js', 'SP.UI.ModalDialog.showModalDialog', options);

If I put a console.log in there, I can see that the function is hit, but something goes wrong. What am I doing wrong here? Any hints appreciated.

1 Answer 1


The issue is most likely with the URL you are using for the Dialog. The variable you are passing is named pageUrl if this really is the page url like:


then the new url is just going to be that plus the /_layouts/ portion. So something like:


This will definitely throw a 500 error as that is not correct. You are wanting your siteUrl rather than the pageUrl. You can verify if this is the issue by using console.log(options.url); before the SOD call.


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