MS Exchange 2013 EVENT ID: 1057

Document ID : KB000039841
Last Modified Date : 14/02/2018
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When using MS Exchange 2013 and the CA Data Protection Exchange Server Agent (ESA), the event log will produce the following benign error:

Event id: 1057 MSExchange Extensibility Agent 'CA DataMinder Exchange Server Agent' went async but did not call Resume on the new thread, while handling event 'OnSubmittedMessage'


Microsoft introduced a code change in Exchange 2013 which produces benign errors in the event logs when the Data Protection Exchange Server Agent is also present.


After applying FIX:RO88793 (incorporating Integration_x64_14.5_HF0189) the thread is initialized for asynchronous event handling and the error no longer appears.

FIX:RO88793 is available to download from the CA Support Portal (


Additional Information:

The error is benign in respect of the code change within MS Exchange 2013.

The fix was created as per Microsoft's recommendation referenced in the link below;