Has anyone ever used the Ajax Control Toolkit in SP2013? It seems that I don't get it working.

I've added the AjaxControlToolkit.dll to my package (with safecontrols) And in my masterpage I reference to it by:

<%@ Register TagPrefix="ajaxToolkit"  Namespace="AjaxControlToolkit" Assembly="AjaxControlToolkit, Version=, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e" %>

But I still get the error message:

"Could not load file or assembly 'AjaxControlToolkit' or one of its dependencies. The system cannot find the file specified."

After deployment I do an "IISRESET" and the AjaxControlToolkit.dll can be found in the GAC


No you dont need it in bin directory! the issue is the version! you need the latest version of ajaxcontroltoolkit! having what you done so far is correct! having it within a project should add it to the gac(assembly) as it should be strongly named!

like i said its todo with the version! have you tried version 3.5?


also look at:


  • Is it possible that changing my ScriptManager to the ajaxToolkit:ToolkitScriptManager to fail my claims based authentication? I always get an error that my user cannot be found... (only with changing the scriptmanager) – Ruben Herman Nov 8 '13 at 12:22
  • Ok, ignore the last comment... Eventually got it working. Following your second link! It was indeed the version that threw the problem. Many thanks! – Ruben Herman Nov 8 '13 at 12:49
  • no probs happy to help! i had a strong feeling that it was todo with the version type as it was the same for 2007 and 2010 :) – Ali Jafer Nov 8 '13 at 13:11

Try to Add you AjaxControlToolkit.dll to Sharepoint site IIS directory -> Bin folder.

"c:\inetpub\WWWroot\Wss\VirtulDirectory(Port Number Folder)\Bin\"

Thats it.

  • Also did this. But it still doesn't work – Ruben Herman Nov 8 '13 at 9:51
  • you can download Ajaxtoolkit from ajaxcontroltoolkit.codeplex.com – Jatin Ambaliya Nov 8 '13 at 10:00
  • 1. Add AjaxControlToolkit.dll reference to your project. 2. Add Ajax Control Toolkit ScriptManager in master page. 3. Register Ajax Control Toolkit namespaces in SharePoint package Designer. – Jatin Ambaliya Nov 8 '13 at 10:02

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