an easy way to solve your solution.

Create a testing page and drag and drop a login control to this page. save all. then try using ur web admin tool.

If it doesnt work, send me ur web.config in order to have a look.

What is your error message

Thanks for the reply. I have tried but still the problem exists.Even I am not able to add a mdf file to the solutio explorer. here is is the web.config contents.

<?xml version="1.0"?>
<!--
    Note: As an alternative to hand editing this file you can use the
    web admin tool to configure settings for your application. Use
    the Website->Asp.Net Configuration option in Visual Studio.
    A full list of settings and comments can be found in
    machine.config.comments usually located in
    \Windows\Microsoft.Net\Framework\v2.x\Config
-->
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
 <appSettings/>
 <connectionStrings/>
 <system.web>
  <!--
            Set compilation debug="true" to insert debugging
            symbols into the compiled page. Because this
            affects performance, set this value to true only
            during development.
        -->
  <compilation debug="true"/>
  <!--
            The <authentication> section enables configuration
            of the security authentication mode used by
            ASP.NET to identify an incoming user.
        -->
  <authentication mode="Windows"/>
  <!--
            The <customErrors> section enables configuration
            of what to do if/when an unhandled error occurs
            during the execution of a request. Specifically,
            it enables developers to configure html error pages
            to be displayed in place of a error stack trace.

        <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
            <error statusCode="403" redirect="NoAccess.htm" />
            <error statusCode="404" redirect="FileNotFound.htm" />
        </customErrors>
        -->
 </system.web>
</configuration>
  

Well I think something is not generating right

Nonetheless

try including a connection string to ur database and try again

Inform me what happens

Thanks for the reply.

Even after doing that also I am geting the error " Unable to  connect to datasource". As per your request here is the web.config file. Kindly go through it. Even I am not able to add a database using solution explorer. 

<?xml version="1.0"?>
<!--
    Note: As an alternative to hand editing this file you can use the
    web admin tool to configure settings for your application. Use
    the Website->Asp.Net Configuration option in Visual Studio.
    A full list of settings and comments can be found in
    machine.config.comments usually located in
    \Windows\Microsoft.Net\Framework\v2.x\Config
-->
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
 <appSettings/>
 <connectionStrings/>
 <system.web>
  <!--
            Set compilation debug="true" to insert debugging
            symbols into the compiled page. Because this
            affects performance, set this value to true only
            during development.
        -->
  <compilation debug="true"/>
  <!--
            The <authentication> section enables configuration
            of the security authentication mode used by
            ASP.NET to identify an incoming user.
        -->
  <authentication mode="Windows"/>
  <!--
            The <customErrors> section enables configuration
            of what to do if/when an unhandled error occurs
            during the execution of a request. Specifically,
            it enables developers to configure html error pages
            to be displayed in place of a error stack trace.

        <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
            <error statusCode="403" redirect="NoAccess.htm" />
            <error statusCode="404" redirect="FileNotFound.htm" />
        </customErrors>
        -->
 </system.web>
</configuration>

Delete the xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0" atribute from configuration tag. This usually generates weird errors at runtime.

I also have same problem...

I can't open my Security link under WAT(Web Administration Tool)...

I have also tested by creating New Web Application.. But unfortunately it dosent work....

can anyone tell me how to drop aspnetdb table in SQLEXPRESS and regenerate it...(I thing there is a problem in database)

here ia ERROR MSG which i get when i click on Security link under WAP

There is aproblem with your data store. This can be caused by an invalid server name or credentials, or by insufficient permission. It can also be caused by the role manager feature not being enabled. Click the button to be redirected to a page where you can choose a new data store...

The following message may help in diagnosing the proble,: AN error occured while attempting to initialize a System.Data.SqlClient.SqlConnection object. The value that was provided for the connection string may be wrong, or it may contain an invalid syntax. Parameter name: connectionString

Please Reply me...

Thanks in advance....

Thanks for the replies. 

I have added con string. Changed authentication mode to forms. deleted the xmlns tag. Now I am geting a deferent error message as follows 

There is aproblem with your data store. This can be caused by an invalid server name or credentials, or by insufficient permission. It can also be caused by the role manager feature not being enabled. Click the button to be redirected to a page where you can choose a new data store...

The following message may help in diagnosing the problem. The entry Local sqlserver has already been added.(c:\inetpub\wwwroot\website6\web.config line 13.

at the boottom "Select data source" commond button

Actually initially i was using sql express edition. Later i installed an new instance of sql dev 2005 edition. Is it likely to cause problem?

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