400 error trying to open email in delivery report

When I attempt to open an email in the delivery report I receive a 400 error.  I am doing this logged on the Exchange server as an administrator.  

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NytroZAsked:
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AmitIT ArchitectCommented:
Is this for single user?
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NytroZAuthor Commented:
I get that message no matter what mailbox I search a message for
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AmitIT ArchitectCommented:
So you are trying to open another user mailbox. First did you ID have required permission to open it? Next use email address to open it. Read this
https://support.microsoft.com/en-us/kb/2770796
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NytroZAuthor Commented:
It doesn't matter if I open another users mailbox or my own.  If I try to view delivery report information on a message in a mailbox that I search I receive the 400 error.  I have tried my mailbox as well.
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AmitIT ArchitectCommented:
My question OWA is working for other users. If yes, then it seems to be issue with your ECP directory.
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NytroZAuthor Commented:
I guess im a bit confused as to what you are asking.  I log into the Exchange Admin Center via https://localhost/ecp

I then choose mail flow>>>>>delivery reports>>>>>choose a mailbox to search>>>>>choose a user to search for messages sent to

Once I get results, I try to view the details of one of the messages and get the 400 error.  It appears it tries to open the details of this message with OWA.  I have no problems opening any mailbox using OWA outside of looking at details of a sent message in the delivery report.
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AmitIT ArchitectCommented:
What about without localhost? Is that working?
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virasecCommented:
Use the server name vs localhost to resolve the 400 error.  I just ran into this with a client and the resolution was to use https://servername/ecp vs https://localhost/ecp
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