Single Sign On between sub domains : Forms Authentication

Today, I am going to discuss one of the feature, that I was working last few days and spent sleepless nights at office and Home as well. Here I am going to discuss Single Sign On (SSO) feature and every other developer implements SSO on some or other day.

So Actually I was having two applications. The requirement was like, user logins from one application and on clicking a link it is navigated to another application. So when user clicks on the link it redirected to application2, it checks, whether the user is authenticated or not. If authenticated it can access the application2 else get redirected to first application for Authentication, And once authenticated again directly reaches the second application.

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