Error : Session state can only to be used when enable sessionState is set to True

Session state can only to be used when enable sessionState is set to True, either in configuration file or in the page directive. Please also make sure the System.Wbe.SessionStateModule or a custom SessionState modle is included in the <configuration>\<system.web>\<httpModule>.

Solution :
Step : 1
 <page enableSessionState="true">.
Step : 2
<modules runAllManagedModulesForAllRequests="True" >.

Step : 3
remove the line if available
<modules>
           <remove name="session" />
</modules>