Sharepoint 2013 RRS feed

  • Question

  • Server: Sharepoint 2013 On-premise

    Client : Windows 7 Pro. + IE 11

    Case: We have deployed a custom Web Part on a 'Web Part Page' in Sharepoint 2013 Server. As soon as client load this page on IE 11 browser it gives  "SCRIPT438: Object doesn't support property or method 'startsWith'" JS error in the File "MicrosoftAjaxWebForms.js".

    This custom Web part is working fine on Sharepoint 2007. We are in the process of migration to Sharepoint 2013.

    Any Hint to resolve this issue will be much appreciated.



    Tuesday, January 17, 2017 6:21 PM

All replies

  • Hi Hafeez,

    Please add the site to compatibility view settings and trusted zone in Internet Explorer to see what happens.

    And also test with other browsers for narrowing down the issue scope.

    Is the “MicrosoftAjaxWebForms.js” a custom JS file for your web part?

    Best Regards,


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    Thursday, January 19, 2017 6:46 AM