 <p>It may be that the space in the title is not being url encoded correctly. Try using <code>encodeURIComponent()</code> to solve this.</p> <pre><code>var link = '@Url.Action("accountPartial", "BillingProfile")?ln=' + ln + '&amp;profileID=' + profileID + '&amp;title=' + encodeURIComponent(title) + '&amp;active=' + active; </code></pre> <p>Just an idea. Can't be sure.</p>