In a Microsoft Exchange Server 2013 environment, the Microsoft Exchange Replication service crashes frequently after you install Cumulative Update 6 for Exchange Server 2013.

Additionally, the following events are logged in the Application log in Event Viewer:


This issue occurs because of old failure entries in the crimson channel log.


To resolve this issue, install Cumulative Update 7 for Exchange Server 2013.


To work around this issue, clear the entries from the crimson channel log that stores mailbox database failure items.

To do this, follow these steps:

  1. On the problem server, open an elevated command prompt.

  2. Run the following command to clear the even entries from the crimson channel log:

    Wevtutil.exe cl "Microsoft-Exchange-MailboxDatabaseFailureItems/Operational"


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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