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Exchange 2013 – Your Request Cant be Completed Right Now

I had this issue on a clients site recently, when a user used OWA and tried to read an email they had already sent in Outlook Web Access they would see the error:

Your Request cant be completed right now. Please try again later.
your request cant be completed rigt now

Additional to this, in OWA when the user tried to compose a new email then send the email they are greeted with the following error:

The error message cant be sent right now. Please try again later.
The error message cant be sent right now

To give a brief overview of my Exchange 2013 environment I had 3 servers one with the CAS role involved and 2 with the MBX role installed in a DAG, these servers where all on Server 2012 R2 Data centre. The issue however may also effect a single Exchange 2013 server with all roles installed.

The issue seems to be that during the installation of Exchange 2013 the permissions on the Exchange Back end are not set correctly. To make sure we get this right, in your particular environment, any server with the MBX role installed, in IIS the OWA virtual directory must have anonymous permissions allow as seen below.

enable exchange back end anonymous permissions


Once these permissions are set on the MBX role servers run:


Then log in back into OWA, all emails will now display correctly.

Allen White

Allen is an IT Consultant and holds the following accreditations. MCSA, MCSE, MCTS, MCITP, CCA, CCSP, VCP 4,5, 6 and HP ASE, AIS - Network Infrastructure.

Comments (1)

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    Angus McLean


    I had the same issue for only one user. IIS had the right permissions. Issue was there were two users in AD with the same LegacyExchangeDN attribute. One account was disabled and the other was the account with the issue. I removed the attribute from the disabled account and now it works.


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