Hi friends

My problem is this:

I have a Web Application in Asp.net.

I use membership class for work with the users authentication by active directory.

I must catch all users that are in multiple OU.

How I can make it?

I've already tried to insert multiple connectionsString and  my web config have this:

<membership>
            <providers>
                <clear/>
                <add connectionStringName="LDAP1" connectionUsername="domain\user" enableSearchMethods="true" connectionPassword="password" name="Provider1" type="System.Web.Security.ActiveDirectoryMembershipProvider, System.Web, &#xA;            Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
        <add connectionStringName="LDAP2" connectionUsername="domain\user"" enableSearchMethods="true" connectionPassword="password" name="Provider2" type="System.Web.Security.ActiveDirectoryMembershipProvider, System.Web, &#xA;            Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"/>
            </providers>
</membership>

 but I have this error "Default Membership Provider could not be found. "

Haven't done this myself, but I found an article that might be useful to you:

How To: Use Forms Authentication with Active Directory in Multiple Domains in ASP.NET 2.0