I have implemented SingleSignOn for my DNN site say www.example1.com. There is another site called www.example2.com. Both the sites will redirect to a common login page which uses a webservice to authenticate the users from external database.
The problem is, when i clicks on login button in example1.com, the user will be redirected to common sso login page, and after successful authentication, he will be redirected back to the original site. If I opens a new tab and enters the url that example2.com, the user is not being logged in.
But, if i clicks on login button in example2.com, the user is automatically getting logs in.
What I want exactly is, when I logs into one site in first tab and opens another site in the second tab, on the page load only the user should be logged in, but not on the login click.
How can I handle this issue ? Any help is appreciated.