I am currently working on my company's Ex2003>2007 transition and I am running into a problem with users that are trying to access OWA using the https://mycompany.local/exchange virtual directory. I have setup forms based auth on all my virtual directories and set them to use "User Name" and specified the correct domain. When a 2003 mailbox user authenticates they are presented with their 2003 OWA mailbox without any problems. If a 2007 mailbox user accesses https://mycompany.local/exchange and use only their user name "jsmith" they are prompted with "The user name or password that you entered is not valid. Try entering it again.". If I use "mycompany\jsmith" or jsmith@mycompany.local they are proxied to the /OWA virtual directory correctly and are presented with their OWA 2007 Mailbox as they should be. This is going to be a huge headache if I cannot have my users access the same url, more importantly because the /exchange directory is what our external reverse proxy is pointing to and I do not want to have to explain to all my users they will now have to authenticate with their full email address. Here is a little background on my environment: Exchange 2003: 1 Front End Exchange 2003 SP2 (Windows Server 2003 (SP1) 2 Backend Exchange 2003 SP2 (Windows Server 2003 SP1) Exchange 2007 1 CAS/HubTS Exchange 2007 SP1 rollup 3 (Windows Server 2008 RTM) 2 Mailbox Exchange 2007 SP1 rollup 3 (Windows Server 2008 RTM) Thanks for your help!

Hi, You should change your settings on the CAS server for the owa virtual directory. You can do this by starting the Exchange Management Console - go to server configuration - select the CAS server - go to the tab Outlook Web Access - get the properties of the OWA virtual directory - change the authentication method to: user name only - fill in the logon domain Regards, Johan visit my site: www.johanveldhuis.nl

Hello, You can set OWA to login without domain name... OWA login without DomainName