Add .Net 3.5 AJAX to SharePoint

On each of the front end web servers in your SharePoint farm:

1/ Install .Net 3.5 and service pack update
2/ Find the web.config files and edit as follows:


  <sectionGroup name="system.web.extensions"
  type="System.Web.Configuration.SystemWebExtensionsSectionGroup,
  System.Web.Extensions, Version=3.5.0.0, Culture=neutral,
  PublicKeyToken=31bf3856ad364e35">

  <sectionGroup name="scripting"
  type="System.Web.Configuration.ScriptingSectionGroup,
  System.Web.Extensions, Version=3.5.0.0, Culture=neutral,
  PublicKeyToken=31bf3856ad364e35">

  <section name="scriptResourceHandler"
  type="System.Web.Configuration.ScriptingScriptResourceHandlerSection,
  System.Web.Extensions, Version=3.5.0.0, Culture=neutral,
  PublicKeyToken=31bf3856ad364e35" requirePermission="false" 
  allowDefinition="MachineToApplication"/>

  <sectionGroup name="webServices"
  type="System.Web.Configuration.ScriptingWebServicesSectionGroup,
  System.Web.Extensions, Version=3.5.0.0, Culture=neutral,
  PublicKeyToken=31bf3856ad364e35">

  <section name="jsonSerialization"
  type="System.Web.Configuration.ScriptingJsonSerializationSection,
  System.Web.Extensions, Version=3.5.0.0, Culture=neutral,
  PublicKeyToken=31bf3856ad364e35" requirePermission="false" 
  allowDefinition="Everywhere" />

  <section name="profileService"
  type="System.Web.Configuration.ScriptingProfileServiceSection,
  System.Web.Extensions, Version=3.5.0.0, Culture=neutral,
  PublicKeyToken=31bf3856ad364e35" requirePermission="false" 
  allowDefinition="MachineToApplication" />

  <section name="authenticationService"
  type="System.Web.Configuration.ScriptingAuthenticationServiceSection,
  System.Web.Extensions, Version=3.5.0.0, Culture=neutral,
  PublicKeyToken=31bf3856ad364e35" requirePermission="false" 
  allowDefinition="MachineToApplication" />

  </sectionGroup>
  </sectionGroup>
  </sectionGroup>

Add the following controls declaration within the <pages> element, which is located within the <system.web> element.

  <controls>
    <add tagPrefix="asp" namespace="System.Web.UI" 
    assembly="System.Web.Extensions, Version=3.5.0.0, 
    Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
  </controls>

Add the following assembly declaration within the <assemblies> element.

  <add assembly="System.Web.Extensions, Version=3.5.0.0, 
  Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>

Add the following verb handlers within the <httpHandlers> element.

  <add verb="*" path="*.asmx" validate="false" 
  type="System.Web.Script.Services.ScriptHandlerFactory, 
  System.Web.Extensions, Version=3.5.0.0, Culture=neutral, 
  PublicKeyToken=31bf3856ad364e35"/>

  <add verb="*" path="*_AppService.axd" validate="false" 
  type="System.Web.Script.Services.ScriptHandlerFactory, 
  System.Web.Extensions, Version=3.5.0.0, Culture=neutral, 
  PublicKeyToken=31bf3856ad364e35"/>

  <add verb="GET,HEAD" path="ScriptResource.axd" 
  type="System.Web.Handlers.ScriptResourceHandler, 
  System.Web.Extensions, Version=3.5.0.0, Culture=neutral, 
  PublicKeyToken=31bf3856ad364e35" validate="false"/>

Add the following script module handler within the <httpModules> element.

  <add name="ScriptModule" 
  type="System.Web.Handlers.ScriptModule, System.Web.Extensions, 
  Version=3.5.0.0, Culture=neutral, 
  PublicKeyToken=31bf3856ad364e35"/>

Add the following safe control entry within the <SafeControls> element, which is located within the <SharePoint> element.

  <SafeControl Assembly="System.Web.Extensions, 
  Version=3.5.0.0, Culture=neutral, 
  PublicKeyToken=31bf3856ad364e35" Namespace="System.Web.UI" 
  TypeName="*" Safe="True" />

Add the following scripting web service handlers within the <configuration> element.

  <system.web.extensions>
    <scripting>
      <webServices>
      <!-- Uncomment this line to enable the authentication 
      service. Include requireSSL="true" if appropriate. -->
      <!--
        <authenticationService enabled="true" 
        requireSSL = "true|false"/>
      -->
      <!-- Uncomment these lines to enable the profile service. 
      To allow profile properties to be retrieved and modified in 
      ASP.NET AJAX applications, you need to add each property 
      name to the readAccessProperties and writeAccessProperties 
      attributes. -->
      <!--
        <profileService enabled="true" 
        readAccessProperties="propertyname1,propertyname2" 
        writeAccessProperties="propertyname1,propertyname2" />
      -->
      </webServices>
      <!--
      <scriptResourceHandler enableCompression="true" 
      enableCaching="true" />
      -->
    </scripting>
  </system.web.extensions>
  <system.webServer>
    <validation validateIntegratedModeConfiguration="false"/>
    <modules>
      <add name="ScriptModule" preCondition="integratedMode" 
      type="System.Web.Handlers.ScriptModule, 
      System.Web.Extensions, Version=3.5.0.0, 
      Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
    </modules>
    <handlers>
      <remove name="WebServiceHandlerFactory-Integrated" />
      <add name="ScriptHandlerFactory" verb="*" path="*.asmx" 
      preCondition="integratedMode" 
      type="System.Web.Script.Services.ScriptHandlerFactory, 
      System.Web.Extensions, Version=3.5.0.0, 
      Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>

      <add name="ScriptHandlerFactoryAppServices" verb="*" 
      path="*_AppService.axd" preCondition="integratedMode" 
      type="System.Web.Script.Services.ScriptHandlerFactory, 
      System.Web.Extensions, Version=3.5.0.0, 
      Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>

      <add name="ScriptResource" preCondition="integratedMode" 
      verb="GET,HEAD" path="ScriptResource.axd" 
      type="System.Web.Handlers.ScriptResourceHandler, 
      System.Web.Extensions, Version=3.5.0.0, 
      Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
    </handlers>
  </system.webServer>