Issue with session in asp.net core session middle ware.

Hi,

we have an issue with the Session Middleware in asp.net core . actually if i am trying to access application from one host it's working fine. then with same host if i am trying to access the another application. the [previously opened ] / first application's session getting cleared . 

what will be issue with session/ session middleware . please advise.

using below in application processing pipeline

UseSession();

UseCookiePolicy

and the service is configured using  - 

CookiePolicyOptions

AddSession