Author:Brendon Upson
Email:bupson at
Subject:RE: IE - ESSO - IIS - problems with POST
Category:Need Help

There is a bug (or "design feature") in IE that will try to do an NTLM reauthentication when POSTing data. The POST also has a Content-Length: 0 http header.

For more information on the IE6 behaviour, please see

We had some code in there to work around this issue but is for some reason broken. We will supply an update for you to test - let us know how you go. 

IE - ESSO - IIS - problems with POST   Jens Bruntt 12.Dec.06
    RE: IE - ESSO - IIS - problems with POST   Brendon Upson 13.Dec.06
        RE: IIS 6, 100 Continue   Brendon Upson 19.Dec.06
            And now it works with IIS   Jens Bruntt 19.Dec.06