Frequent Question: What Means R2 in Windows Server?
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It’s called R2 because it’s a different kernel version (and build) from 2008. Server 2008 uses the 6.0 kernel (build 6001), 2008 R2 uses the 6.1 kernel (7600).

What does the R2 mean in Windows Server 2012 R2?

Indeed, R2 = release two; like Windows Server 2008 R2. It’s a minor release; you can see it by the major+minor build numbers.

Is Windows Server 2012 R2 32 or 64 bit?

It is a cumulative set of security, critical and other updates. Windows Server 2012 R2 is derived from the Windows 8.1 codebase, and runs only on x86-64 processors (64-bit). Windows Server 2012 R2 was succeeded by Windows Server 2016, which is derived from the Windows 10 codebase.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.

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