Session Variable lost in iFrame asp.net

I have session variable that is created in EditPla开发者_开发问答ylist.aspx. Edit.aspx is loading EditPlaylist.aspx in an iframe.

when loading sessions from EditPlaylist.aspx page they are null.

the session was not before I added the EditPlaylist.aspx to an iFrame. Is there a workaround for this?

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If its running under IIS , how many workers processes do you have ? if more than 1 - you have to share your session over all instances .