Because I'm using a coexistence scenario I'm having to use I get to the login page but after I log in i get a 404 Error.
Took me a while to realize that when instructions say to do something with the "Exchange Back End" that they mean, on the Mailbox server.
I bring this up because I have also tried Cannot access Outlook Web App or the EAC after you re-create the "owa" or "ECP" virtual directory on an Exchange Server 2013 Mailbox server I get the impression based on what I have read that the 404 is being returned from the Exchange Back End (aka the Mailbox server) but in my scenario how can I tell which one?
A client having Exchange 2013 recently faced a strange issue while logging in to OWA.
The error is shown below : Upon further analyzing the error, it was found that this error can occur due to two reasons: If you again check the Exchange version it will show a value like eg: 88218628259840 [ for Exchange Server 2013] You can also check the value of the attribute ms Exch Version from attribute editor in ADSIEdit.
Check Schema(String connection String, Name Value Collection config) at System.