How to remove Main Domain cookie from Sub Domain

Question

is it possible to remove Main Domain cookie from Sub Domain ?I am using single sign on .On logout i want to remove the maindomain cookie

Answer 1

I suspect you would have to navigate to the parent domain, have it remove the cookie, and then maybe redirect back to the child site (perhaps passing the return url encoded on the query-string).

Answer 2

As far as I know, you can't do that.

But couldn't you just point the logout call at the main domain? (presumably you're already doing this for the login call, in order to get the main domain cookie in the first place)