I am running a single Exchange 2013 server with Basic Authentication enabled on the OWA and ECP virtual directories. This worked fine with CU1 installed. After upgrading to CU2 I noticed that I get the FBA login page when I try to visit OWA or ECP.

Just double-checked the authentication settings in EAC and EMS:

PS D:\Scripts> Get-OwaVirtualDirectory | fl forms*,basic*

FormsAuthentication : False
BasicAuthentication : True

PS D:\Scripts> Get-EcpVirtualDirectory | fl forms*,basic*

FormsAuthentication : False
BasicAuthentication : True

Yet when I visit the url I see the FBA login page. Is this a known

Hi,

there are differences in the Exchange 2013 RTM CU2 implementation:

Silent redirection is the default behavior in Exchange 2013, meaning that if FBA is enabled on source and target OWA virtual directories, the redirection will also be a single sign-on event. Refered from:

Released: Exchange Server 2013 RTM Cumulative Update 2

http://blogs.technet.com/b/exchange/archive/2013/07/09/released-exchange-server-2013-rtm-cumulative-update-2.aspx

Thanks,

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Thank you for your reply. I have a single server and FBA is not enabled. Still I get a FBA logon screen when I visit the url, a Basic authentication popup is what I expected.

You're not presenting the server to the internet via Threat Management Gateway (TMG) are you?

Nope, no TMG or other reverse proxy. I think this is a bug, spoke to someone else who saw this with CU1 too. I could reapply the OwaVirtualDirectory settings but did not do that yet to be able to report the behaviour.

So I believe I'm reporting a bug here.

Hi,
This issues has been addressed in KB2871485.

The FBA page is displayed when a user accesses OWA or ECP to log on to Exchange Server 2013
http://support.microsoft.com/kb/2871485

Thank you.