Microsoft has released Cumulative Update 2 (CU2) for Exchange Server 2013 RTM.

In their blog post the Microsoft Exchange team highlights the following improvements delivered in CU2.

  • Per-server database support – increased from 50 to 100
  • OWA redirection – single sign-on behaviour changes
  • High availability – introducing a new service, the DAG Management Service
  • Managed Availability – some changes to the responder throttling framework
  • Cmdlet help – support for updateable help (a PowerShell v3 feature)
  • OWA search improvements – better highlighting of search results
  • Malware Filter Rules – custom malware filter rules for specific users, groups, or domains

Another notable change is the inbound proxy probes now send from inboundproxy@contoso.com instead of @inboundproxy.com. If you have anything monitoring or config related in your environment to deal with those probes you will need to update it for that change.

Note that Cumulative Update 2 includes Active Directory schema changes and RBAC role changes.

Important: CU2 has been re-released to resolve this known issue with the first build of CU2 that was released. The download link below is the correct link for the new build. You should not deploy the previous build of CU2, even if you do not use Exchange 2013’s new public folders.

Download Exchange Server 2013 RTM CU2 here.

Deployment Steps: refer to Installing Cumulative Updates for Exchange Server 2013.

Warning: The update pre-requisite check stops the “Microsoft Exchange FrontEnd Transport” and “Microsoft Exchange Transport” services. If you cancel the update after the pre-requisite check you will need to manually start those services.

About the Author

Paul Cunningham

Paul is a former Microsoft MVP for Office Apps and Services. He works as a consultant, writer, and trainer specializing in Office 365 and Exchange Server. Paul no longer writes for Practical365.com.

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