sorry sir i already refer these links but no solution.
root web.config
="1.0"
<configuration>
<system.web>
<compilation debug="true" targetFramework="4.0">
<assemblies>
<add assembly="Microsoft.Office.Interop.Excel, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71E9BCE111E9429C"/></assemblies></compilation>
</system.web>
</configuration>
..........................................
sub dir web.congig
<configuration>
<configsections>
<location path="Admin">
<system.web>
<authorization>
<deny users="?">
<connectionstrings>
<add name="DataAccessQuickStart" providername="System.Data.SqlClient" connectionstring="Data Source=SSKUSHWAH-PC;Initial Catalog=tsm;User ID=sa;Password=SSKUSHWAH">
<dataconfiguration defaultdatabase="DataAccessQuickStart">
<appsettings>
<clear>
<system.web>
<pages enablesessionstate="true" enableviewstatemac="false" enableeventvalidation="false" viewstateencryptionmode="Never" theme="SkinFile" controlrenderingcompatibilityversion="3.5" clientidmode="AutoID">
<controls>
<add namespace="AjaxControlToolkit" assembly="AjaxControlToolkit" tagprefix="ajaxToolkit">
<add tagprefix="CustomControls" namespace="CustomWebControls" assembly="CustomWebControls">
<compilation debug="true" defaultlanguage="c#" targetframework="4.0">
<assemblies>
<add assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
<add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A">
<add assembly="System.Web.Extensions.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089">
<add assembly="System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A">
<add assembly="System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089">
<add assembly="System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089">
<add assembly="System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A">
<add assembly="System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089">
<add assembly="System.Web.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A">
<httphandlers>
<add verb="POST,GET" path="ajaxpro/*.ashx" type="AjaxPro.AjaxHandlerFactory, AjaxPro.2">
<authentication mode="Forms">
<forms name="AuthCookie" path="/" loginUrl="~/Admin/AdminLogin.aspx" protection="All" timeout="20">
</forms>
<authorization>
<allow users="?">
<sessionstate timeout="60">
<customerrors mode="Off">
.........................................
pls give me correct sol.