ihi
I need to configure my ldap connectivity of AD with my umbraco backoffIice login screen.
The user from AD directory needs to be authenticated before the user logins to umbraco cms backoffice.

This is the structure currently in AD directroy

Y IS LDAP SERVER address

DC=A,DC=COM
                             ou=B
                                      ou=C
                                                 ou=Groups

                                                                      cn=testgroup
                                                 ou=Users
                                                                      cn=testuser

My user resides inside ou=Users with name as testuser.The user is  added inside "testgroup" group under ou=Groups.

I have added the following changes in web.config of file

1)I have added the following changes in <connectionStrings> of web.config file
<connectionStrings>
<add name="ADConnectionString" connectionString="LDAP://Y.com:389/OU=Users,OU=C,OU=B,DC=A,DC=com" />
</connectionStrings>

2)I have added the following changes in <providers> of web.config file
<membership defaultProvider="MyADMembershipProvider" userIsOnlineTimeWindow="15">
      <providers>
        <clear />
        <add name="MyADMembershipProvider" type="System.Web.Security.ActiveDirectoryMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" connectionStringName="ADConnectionString"  connectionUsername="domain\username" connectionPassword="password" attributeMapUsername="sAMAccountName"/>
                  

        <add name="UmbracoMembershipProvider" type="umbraco.providers.members.UmbracoMembershipProvider" enablePasswordRetrieval="false" enablePasswordReset="false" requiresQuestionAndAnswer="false" defaultMemberTypeAlias="Another Type" passwordFormat="Hashed" />
        <add name="UsersMembershipProvider" type="umbraco.providers.UsersMembershipProvider" enablePasswordRetrieval="false" enablePasswordReset="false" requiresQuestionAndAnswer="false" passwordFormat="Hashed" />

      </providers>
    </membership>

3)I have added the assembly System.Web used in MyADMembershipProvider in assemblies section of web.config.

 <compilation defaultLanguage="c#" debug="false" batch="false"  targetFramework="4.0">
 <assemblies>
        <!-- ASP.NET 4.0 Assemblies -->
        <add assembly="System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
        <add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
        <add assembly="System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
        <add assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Xml.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
        <add assembly="System.Data.DataSetExtensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
        <add assembly="System.Web.Extensions.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
      </assemblies>

I have made following changes in umbracoSettings.cfg file

<providers>
        <users>
          
            <DefaultBackofficeProvider>MyADMembershipProvider</DefaultBackofficeProvider>
        </users>
    </providers>

The issue I am facing is when I am trying to login with username:domain\username and password:password at umbraco login interface.
It focus back to username and password field highlighted in red.Kindly suggest how to trouble shoot the issue in umbraco as I am not getting errors.
Please share any approach or changes i need to make to web.config and umbracoSettings.cfg