Exchange 2013/2016: HTTP redirection issues with ECP virtual directory – /owa/ecp

Exchange 2013: HTTP redirection issues with ECP virtual directory – /owa/ecp

When you try to access ECP on Exchange 2013, browser redirects to /owa/ecp and shows “Bad Request”

You will see this if HTTP redirection is applied on Default website and those settings got replicated to all Virtual directories underneath.

Let’s look at How to enable HTTP redirect on Exchange 2013.

To enable HTTP to HTTPS redirection on exchange 2013, on IIS VDir highlight Default website and click HTTP Redirect:

 

Change the settings as shown:

The issue addressed in this article will happen if the ECP Vdir has an HTTP redirect set on it:

Let’s recap the SSL Settings and HTTP redirect settings for all Virtual directories in Exchange 2013 and ensure it is set properly:

Vitual Directory	SSL enabled	HTTP Redirect
Default website	NO	Yes
aspnet_client	Yes	NO
Autodiscover	Yes	NO
ecp	Yes	NO
EWS	Yes	NO
owa	Yes	NO
Microsoft-Server-ActiveSync	Yes	NO
OAB	Yes	NO
PowerShell	NO	NO
Rpc	Yes	NO