Hi, what exactly have i to change in the web.config that i have my custom membership provider ?i have already test several possibilities but with no success.always i could'nt login in the backend , and forefront login also not working too.did i also have some changes in the global.asax ?best regards axel.  <!-- Umbraco Membership -->    <authentication mode="Forms">      <forms name="yourAuthCookie" loginUrl="login.aspx" protection="All" path="/"/>    </authentication>    <authorization>      <allow users="?"/>    </authorization>    <!--  Membership Provider -->    <membership defaultProvider="UmbracoMembershipProvider" userIsOnlineTimeWindow="15">      <providers>        <clear/>        <add name="UmbracoMembershipProvider" type="Umbraco.Web.Security.Providers.MembersMembershipProvider" minRequiredNonalphanumericCharacters="0" minRequiredPasswordLength="4" useLegacyEncoding="true" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" defaultMemberTypeAlias="Member" passwordFormat="Hashed"/><!--        <add name="UsersMembershipProvider" type="Umbraco.Web.Security.Providers.UsersMembershipProvider" minRequiredNonalphanumericCharacters="0" minRequiredPasswordLength="4" useLegacyEncoding="true" enablePasswordRetrieval="false" enablePasswordReset="true" requiresQuestionAndAnswer="false" passwordFormat="Hashed"/>-->            <add name="MyNewLibrary.Security.Membership.MyNewMembershipProvider" type="MyNewLibrary.Security.Membership.MyNewMembershipProvider" requiresQuestionAndAnswer="false" enablePasswordRetrieval="true" enablePasswordReset="true" description="Custom Membership Provider " requiresUniqueEmail="true" applicationName="/" passwordFormat="clear" userIsOnlineTimeWindow="15"/>      </providers>    </membership>   <!--  Role Provider -->    <roleManager enabled="true" defaultProvider="UmbracoRoleProvider">      <providers>        <clear/>        <add name="UmbracoRoleProvider" type="Umbraco.Web.Security.Providers.MembersRoleProvider"/>        <add name="MyNewLibrary.MyNewRoleProvider" type="MyNewLibrary.MyNewRoleProvider"/>         </providers>    </roleManager>