Can't prepare an Active Directory forest in Skype for Business Server 2015

Symptoms
When you run forest preparation to prepare an Active Directory forest in a Microsoft Skype for Business Server 2015 environment, the preparation process fails.
Cause
This issue occurs because the values of the rangeUpper and rangeLower attributes are incorrect in the "CN=ms-RTC-SIP-ServiceSchemaVersion,CN=Schema,CN=Configuration,DC=..." container.
Resolution
To fix this issue, install the March 2016 cumulative update 6.0.9319.235 for Skype for Business Server 2015, core components.
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.
Properties

Article ID: 3141110 - Last Review: 03/18/2016 23:31:00 - Revision: 1.0

Skype for Business Server 2015

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