IE doesn't send form data

From: pascal (pascal_at_hausers.info)
Date: 10/21/05 

Date: 21 Oct 2005 04:31:53 -0700

hi there..

i already searched the net and found proposed workarrounds, but they
doesn't work for me.

the problem is that i have an asp site with all anonymous access except
one page which has only integrated authentication (for login/getting
the domain user name).

so after the login we're in the anonymous sites. an ie has an
optimization that the form data aren't sent because ie expect that the
server will send an unauthorized because the previous site expected
authentication. -> i don't have access to the form data and the asp
page fails.

a workarround is to enable integrated authentication to all files in
the site. but this isn't an option for me because the site runs under a
special anonymous user which has access to a sql server. when i set
integrated authentication only then the iis tries to impersonate the
logged in user, resulting in a 'anonymouse loggon' user who doesn't
have access to the sql server.

the workarround i've found in the net was from 2002. maybe something
has changed since then.

ah. some iis versions sends an unauthenticated allways requesting ie to
authenticate again and then the form data is sent. so it works
sometimes. any idea what iis versions changed this behavior. i have an
iis 6 that works. an other that doesn't work (but not here) and my iis
5.1 doens't work either. but there are also iis 5.1 that works
(development).

is there a way to explicitly control this behaviour?

thank you very much!

pascal