I was working with the authentications methods for OWA and frankly, I must have messed something up.
Now, when trying to access the ECP, after providing your username and password, it takes you to the OWA page and it gives you a blank “HTTP 400 Error” page.
I understand an administrator can use the Exchange Management Shell to reconfigure the authentications on the virtual directories, but my online research turns up contradictory shell commands. I request help to properly format the shell commands to correct authentications on the virtual directories for the ECP and OWA.
FWIW; One Exchange 2013 server holds all roles, the server name is "mail" & the internal name is mail.wti.local