Windows Server 2008

Build Number

Knowledge Base Article ID

Comment

6.0.6001.17101

n/a

Windows Server 2008 RTM

6.0.6001.18016

KB950050

Windows Server 2008 RTM + KB950050

6.0.6001.22258

KB956710

Windows Server 2008 RTM + KB956710

6.0.6001.22352

KB959962

Windows Server 2008 RTM + KB959962

6.0.6002.18005

KB948465

Windows Server 2008 Service Pack 2

6.0.6002.22233

KB975925

Windows Server 2008 RTM + KB975925

 

Windows Server 2008 R2

Build Number

Knowledge Base Article ID

Comment

6.1.7600.16385

n/a

Windows Server 2008 R2 RTM

6.1.7600.20542

KB975354

Windows Server 2008 R2 RTM + KB975354

6.1.7600.20683

KB981836

Windows Server 2008 R2 RTM + KB981836

6.1.7600.20778

KB2223005

Windows Server 2008 R2 RTM + KB2223005

6.1.7601.16562

n/a

Windows Server 2008 R2 Service Pack 1 Beta

6.1.7601.17105

n/a

Windows Server 2008 R2 Service Pack 1 RC

6.1.7601.17514

KB976932

Windows Server 2008 R2 Service Pack 1 RTM

 

Windows Server 2012

Build Number

Knowledge Base Article ID

Comment

6.2.9200.16384

n/a

Windows Server 2012 RTM

6.2.9200.16433

KB2770917

Windows Server 2012 RTM + KB2770917

6.2.9200.20655

KB2823956

Windows Server 2012 RTM + KB2823956

6.2.9200.21885

 KB3161609

June 2016 update rollup for Windows Server 2012  

 

Windows Server 2012 R2

Build Number

Knowledge Base Article ID

Comment

6.3.9600.16384

n/a

Windows Server 2012 R2 RTM

6.3.9600.17415  Windows Server 2012 R2 RTM + KB3000850

6.3.9600.17831

KB3063283

Windows Server 2012 R2 RTM + KB3063283

6.3.9600.18080

KB3063109

Windows Server 2012 R2 RTM + KB3063109

6.3.9600.18339 

KB3161606

June 2016 update rollup for Windows Server 2012 R2 
6.3.9600.18398 

KB3172614

July 2016 update rollup for Windows Server 2012 R2
6.3.9600.18692 June 27, 2017—KB4022720 (Preview of Monthly Rollup)