We are experiencing an issue with OWA. When trying to login through OWA, All users receive "Outlook Web App isn't available".
I'm busting my head against the wall trying to figure out the cause.
One thing I did notice is that in IIS Manager under OWA -- each server has a different version. However, I'm not sure how this would have happened
EX-02 (which is being pointed at for owa access) has version 14.2.298.4 & version 126.96.36.199 but seems like the latest version is taking over.
EX-01 has version 188.8.131.52
EX-03 has version 184.108.40.206
From Application log on EX-02
EX-02 has a mailbox on 220.127.116.11 server version. However, no Client Access server or front-end server with a matching version was found to handle the request.
Help is greatly appreciated!