Running Exchange Server 2007 with EV2007 SP1 users cannot access their archived e-mails using RPCoverHTTP (Outlook 2007) or thru https://ev.... and a login prompt is displayed to them
the resloution was after making sure that all settings on the EV server is properly set, to disable the 'Enable Integrated windows Authentication' option in the IE7 security settings
I reached this resolution after weeks of researching and I felt that I have to share it
