Question

I am opening a window with window.open and I am losing the server session.
Is there a way to open a window with Javascript and use the same session?

I need this working in IE 7 and higher.

I am working with ASP.NET on the server side. The sever does not have a sessionless cookie state. <sessionState mode="InProc" timeout="15" />

Answer 1

It looks like you have enabled cookieless session state.

The approach for ASP.NET is similar to the one Pekka mention for PHP, but you need to call

window.open("/(S(<%= Session.SessionID %>))/NewPage.aspx");

Or change your web.config to force cookies for sessions.