i am trying to impersonate user by having them authenticate using their windows logon. the problem is i get ibject refrerence not set to the insatnce ... errror when trying to use some resources that the authenticated user has access to. and also the log on pop up only appears for my firefox and it doesn't even ask to log on for IE 7.
this is the code i have used.
<authentication mode= Go to the complete details ...