Hi, I have a problem loging in to OWA using Formbase Authentication. I have a Front end Back end Topolgie using Windows 2003 R2 and Exchange 2003 SP2. Both Server are Domain Controller. I can successfully login on the backendserver using owa, but when i login on the frontendserver i get 2 frames in my internet explorer both displaying the FBA. The eventlogs look fine. no error / authentication successfull in security log. I tried with domain\username and user@domain.com login - same result. FBA is only activated on the frontend server. Authentication of HTTP Virtual Server (in Exchange System Manger) - Back end server is configured with basic auth (with "\" in domain) and windows auth. - On the front end server basic auth is configured (i am not albe to change) i alredy reset the default virtual directories in iis (http://support.microsoft.com/kb/883380/en-us) thanks best regards wolfgang
