We have an Windows Server 2012 Exchange 2013 server with OWA.
All users can login fine, but when I open another mailbox with my Admin account, having enabled access to that user's mailbox, the URL redirects to /owa/auth/errorfe.aspx?httpCode=500 and shows:
:-(
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Google won't help me in this instance. Where in the eventlog are OWA events logged?