Assume that you use Microsoft SQL Server 2008 or SQL Server 2008 R2 or SQL Server 2012 on a computer that has Windows 8.1 installed. When you use the @@version parameter and the xp_msver system stored procedure to find the operating system version information, incorrect information is returned.
The issue occurs because Windows 8.1 has deprecated GetVersion and GetVersion (Ex) APIs. These APIs do not return the correct operating system version number.
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Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.