Microsoft JScript runtime error: AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts.

03May10

After including a control from the ASP.Net AjaxControlToolkit I got this error:

Microsoft JScript runtime error: AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts. Ensure the correct version of the scripts are referenced. If you are using an ASP.NET ScriptManager, switch to the ToolkitScriptManager in AjaxControlToolkit.dll.

I believe there are many other problems which can cause this symptom, but in my case, as the error message says, the solution is that you need to include the “ToolkitScriptManager” rather than the standard “ScriptManager”

To add the ToolkitScriptManager, you first need to include the assembly namespace on your aspx page.

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit"
TagPrefix="asp" %>

If you control is right on your main page, chances are you have already done this.  But in my case the Ajax control was embedded in a user control, so I didn’t have it on the main page yet.

Then you can simply include the manager by changing the standard script manager

<asp:ScriptManager ID="scriptMaster" runat="server"></asp:ScriptManager>

to this:

<asp:ToolkitScriptManager ID="toolkitScriptMaster" runat="server">
</asp:ToolkitScriptManager>

Environment: Visual Studio 2008, ASP.Net 3.5

Filed under: Programming   |  49 Comments

49 Responses to “Microsoft JScript runtime error: AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts.”  

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  1. 1 Bikash on May 16th, 2010 said:

    Thanks it’s working.

  2. 2 Vreddy on Jun 28th, 2010 said:

    Thank you so much
    its working

  3. 3 Leandro of Brazil on Jul 22nd, 2010 said:

    Thanks so much !!

  4. 4 Muhammad Amin on Aug 27th, 2010 said:

    Very good, it solved my problem

  5. 5 wowNOThelpful on Aug 31st, 2010 said:

    So what do you do if you’re working within a content page, and your script manager is on the master? Now post something about the scriptmanagerproxy so we can move on to the issues that arise from that

  6. 6 Dilip on Oct 5th, 2010 said:

    How to switch to the ToolkitScriptManager in AjaxControlToolkit.dll.

  7. 7 Dilip on Oct 6th, 2010 said:

    How to switch to the ToolkitScriptManager in AjaxControlToolkit.dll

  8. 8 Eli on Nov 5th, 2010 said:

    In my lenguage, Spanish, Excelente, Muchisimas Gracias

  9. 9 mj_developer on Nov 29th, 2010 said:

    Thank you. It’s working for me.

  10. 10 Beazy on Dec 21st, 2010 said:

    I have been trying to fix this issue for many weeks. I stumbled on this solution and it worked. I cannot say thank you more. Im serious.

  11. 11 dinesh kumar on Jan 13th, 2011 said:

    It’s working. Thanks

  12. 12 NC on Jan 16th, 2011 said:

    Thanks, it was exactly the solution i needed

  13. 13 Mattie on Jan 18th, 2011 said:

    Yes, working for me too… Thank You!

  14. 14 JMP on Jan 22nd, 2011 said:

    you are amazing! Thank you very much for this! I finally got it!

  15. 15 Chan on Feb 1st, 2011 said:

    thanx its working fine now,GR8

  16. 16 Gaijintendo on Feb 7th, 2011 said:

    Thought I would share how I screwed this up:

    I tried making this change for a control, but I didn’t have the tagprefix as TagPrefix=”asp” I had =”act”. Problem was I was typing <asp: and autocompleting …ToolkitScriptManager when I should have been using <act:ToolkitScriptManager….

    Dumb but that fixed it.

  17. 17 Harshad on Feb 13th, 2011 said:

    That post is cool my problem ran awayyyyyyyyyyyyyyy.

    thans

  18. 18 asfarian on Feb 21st, 2011 said:

    Finally, a working solution.
    Thanks :D

  19. 19 Vennila on Mar 3rd, 2011 said:

    It solved my Error… Thanks:)

  20. 20 seroxat on Mar 3rd, 2011 said:

    i really like yours site

  21. 21 wolf on Mar 4th, 2011 said:

    How to switch to the ToolkitScriptManager in AjaxControlToolkit.dll.

  22. 22 shreyas on Mar 16th, 2011 said:

    Thank you. It worked for me.

  23. 23 Maarten on Mar 17th, 2011 said:

    Thanks that worked perfectly!

    Maarten

  24. 24 Justin on Mar 30th, 2011 said:

    Perfect! You do the internet great justice

  25. 25 Younus on Apr 5th, 2011 said:

    Thanks yaar.

  26. 26 Shweta on Apr 7th, 2011 said:

    Thanks a lot :) Its working!

  27. 27 Gusto on Apr 21st, 2011 said:

    Thanks so much. it works.

  28. 28 Ganesh on Apr 28th, 2011 said:

    It’s working thanks…

  29. 29 Dee on May 24th, 2011 said:

    Thanks so much, It’s working!

  30. 30 praveen on Jun 7th, 2011 said:

    Thank you it works for me

  31. 31 amir khammar on Jul 8th, 2011 said:

    tank you my problem resolve

  32. 32 Sek on Jul 13th, 2011 said:

    tks!!!!

  33. 33 Fran6 on Jul 21st, 2011 said:

    This works, thanks a lot

  34. 34 Raja.N on Sep 10th, 2011 said:

    great, its working perfectly. tahnks

  35. 35 TheGuru on Oct 13th, 2011 said:

    Sweet!

  36. 36 fish on Oct 19th, 2011 said:

    thanks, you saved me :)

  37. 37 Anas on Nov 1st, 2011 said:

    thanks error is solved

  38. 38 Rajiv on Nov 4th, 2011 said:

    Thanks….It helped in resolving the problem.

  39. 39 karla on Dec 20th, 2011 said:

    Thank you!!!!!!

  40. 40 sanket on Jan 6th, 2012 said:

    thanks …

  41. 41 trav on Jan 10th, 2012 said:

    thanks! that make for a quick fix.

  42. 42 Jinu on Jan 13th, 2012 said:

    Thanks, now working

  43. 43 rafi syed on Jan 28th, 2012 said:

    Thanks ….it’s working fine…

  44. 44 Gowtham on Mar 6th, 2012 said:

    Thank you so much , Its really working :)

  45. 45 Theo on Mar 7th, 2012 said:

    Removing ScriptManager is not a valid option for us SharePoint users who do not want this change applied to every app, site, and web in the entire farm cause we modified the out of the box master page. There should be a better method of doing this for SharePoint 2010 (would have been nice if Microsoft had put the ScriptManager in a content place holder so we could override it on a page by page basis).

  46. 46 Bijan on Mar 27th, 2012 said:

    Thanks it fixed my problem too.

  47. 47 santosh menon on Apr 5th, 2012 said:

    my problem is solved, is toolkitscriptmanager replacement of scriptmanager in new version of ajax please explan :)

  48. 48 Dhinagaran on Apr 11th, 2012 said:

    Dear Friend,

    It is working fine Thank you so much

  49. 49 Vishal Prajapati on Apr 21st, 2012 said:

    Its working…
    Thanks a lot :)

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