I’ve been working with the Microsoft team on several issues I have faced with my Exchange Hybrid deployment.

Most recent issue: HCW Serialization Error

Today I am informed that Cumulative Update 6 for Exchange Server 2013 was just released.

Cumulative Update 6 for Microsoft Exchange Server 2013 was released on August 26, 2014. This cumulative update resolves a list of issues.

Source:  http://support.microsoft.com/kb/2961810

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