My hashed Password not working

I am creating a web application using SqlMembershipProvider with hashed pasword as follow:

<membership defaultProvider="GWA_MembershipProvider" userIsOnlineTimeWindow="15" 
                hashAlgorithmType="SHA1"><providers><clear /><add name="GWA_MembershipProvider" connectionStringName="GWASQLServer" 
             applicationName="/" enablePasswordRetrieval="false" enablePasswordReset="true" 
             requiresQuestionAndAnswer="false" requiresUniqueEmail="true" passwordFormat="Hashed" 
             maxInvalidPasswordAttempts="5" passwordAttemptWindow="10" minRequiredPasswordLength="7" 
             minRequiredNonalphanumericCharacters="0" 
             type="System.Web.Security.SqlMembershipProvider, 
                   System.Web,Version=2.0.0.0, Culture=neutral,PublicKeyToken=b03f5f7f11d50a3a" /></providers></membership><machineKey validation="SHA1" />

but after creating new user the new user can not log in using his password

I tried many times using many users but every time log in failed with: loginfailure=1