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 PostPost subject: Visual Studio / .NET build numbers explained        Posted: Sun Jun 07, 2009 3:38 pm 
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Wed Apr 11, 2007 2:11 pm


Germany, Earth

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Windows 10
Maybe some of you have been wondering why the build numbers of Visual Studio and .NET are always so high,
for example 10.0.20506.01 for the recent Visual Studio 2010 beta. The reason for this is the format of the build
number - it's not an incrementing number as for Windows builds - the format of Visual Studio build numbers is YMMDD.NN

Y: This increases every year the team is working on the product
MM: The month in which the build was compiled
DD: The day on which the build was compiled
NN: Number of recompiles of the build (during the development this number is mostly 00 or 01, but when a build
gets branched for release, the other parts of the build number are freezed and only this part increments)

Here are a few examples:

8.0.40607.16 - VS 2005 Beta 1 - 2004*, 7th June, recompile no. 16
8.0.50215.44 - VS 2005 Beta 2 - 2005, 15 February, recompile no. 44
8.0.50727.26 - VS 2005 RC - 2005, 27th July, recompile no. 26
8.0.50727.42 - VS 2005 RTM

9.0.20404.00 - VS 2008 Beta 1
9.0.20706.01 - VS 2008 Beta 2
9.0.21022.08 - VS 2008 RTM

10.0.11001.01 - VS 2010 CTP
10.0.20506.01 - VS 2010 Beta 1

*Orginally the 'Y' was the last character of the calendar year, but with the beginning of the development of Visual
Studio 2008 it has been changed to the number of the year the team is working on the project.

MS vNext: Windows 10 ESD Database - Windows 10 Build Labs - Windows 10 Update Archive - Office 2016 Version Tracker - Office Downloader

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 PostPost subject: Re: Visual Studio / .NET build numbers explained        Posted: Sun Jun 14, 2009 5:47 pm 
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Fri Apr 17, 2009 4:14 pm


In your mind

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Debian Linux
I never knew that. Thanks Daniel.

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