Question : Cannot Reply using Outlook Web Access (OWA) , Windows XP and IE7

We had a Vista machine that had the red x problem with OWA so I installed the microsoft exchange patch and that fixed the problem,

However I have a problem with my laptop which is XP SP2 running IE7, using the premium client of OWA I can create a new message and send but when I reply to any message it hangs for a while, then asks for authenitcation again and finally comes up with an error "Unknown" - at that point the OWA session is pretty screwed.

From the same computer when I use firefox and the basic client I can send and reply perfectly.

Any thoughts .... this is very frustrating as I much prefer the premium client - and I dont fancy downgrading to IE6

TIA

Answer : Cannot Reply using Outlook Web Access (OWA) , Windows XP and IE7

If it works internally correctly, but doesn't from outside then I would be looking at the cause of the problem being outside of Exchange - firewall would be the number one culprit. Exchange doesn't care where the connection comes from - inside or outside, so the fact that it works fine inside should mean it works correctly outside. You have to look at what is different.

Simon.