Issue 1Text of Domain Name System (DNS) events is not rendered correctly in the Event Viewer and Computer Management snap-ins on Windows Server 2012 R2-based DNS servers if the December 2014 update rollup 3013769 is installed, but the October 2014 update rollup 3995388is not installed.
Issue 2Text of DNS events is not rendered correctly in the Global Logs node of Windows Server 2012 R2 DNS Manager if the August 2014 update rollup 2975719 or a later version of monthly update rollup is installed.
Here's the screen shot of the DNS event log message:
Workaround for Issue 1Install the October 2014 update rollup 3995388before or after you install the December 2014 update rollup 3013769 to prevent or work around this issue.
Workaround for Issue 2View the DNS events in the Event Viewer and Computer Management snap-ins after you install hotfix 3082532.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.