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Quote About: These packages contain .NET Framework 4.6.1 Full x86/x64 installers including updates (and Language Packs) integrated. For command-line options run <installer_name>.exe /?
Note: The reason its called "Slim" is because the original MSI installers have been carefully edited to remove unnecessary setup junk, this should save 200+ MB of space on your HDD/SSD.
OS: Windows Vista/Server 2008 SP2 x86/x64 or Windows 7/Server 2008 R2 SP1 x86/x64
Slim Microsoft .NET Framework 4.6.1 Full x86/x64
Slim Microsoft .NET Framework 4.6.1 Full x86/x64 Incl. Language Packs (ar cs da de el es fi fr he hu it ja ko nl no pl pt-BR pt-PT ru sv tr zh-Hans zh-Hant)
 

Some tools and resources for (re)creating your own slim (intl) installer
.NET4.6.1 SFX Maker (installer repacker):  
.NET4.6.1 Intl SFX Maker (if you want to add LP):
 
Silent "No GUI" SFX alternative:
 
Slim down your dotNET4(.6.x) & LP installers:
 
If you cant find a hotfix try using the KB(1234567) number w/ this URL:
 
Slim Language Packs: Arabic: N/A
Chinese (Simplified):
Chinese (Traditional):
Czech:
Danish:
Dutch:
Finnish:
French:
German:
Greek:
Hebrew:
Hungarian:
Italian:
Japanese:
Korean:
Norwegian (Bokmal):
Polish:
Portuguese (Brazil):
Portuguese (Portugal):
Russian:
Spanish:
Swedish:
Turkish:
http://support2.microsoft.com/hotfix/KBHotfix.aspx?kbnum=1234567  

Description:

The .NET Framework is a popular development platform for building apps for Windows, Windows Store, Windows Phone, Windows Server, and Windows Azure. The .NET Framework platform includes the C# and Visual Basic programming languages, the common language runtime, and an extensive class library. read more.

Info: The .NET package will be slipstreamed as pre-installed
OS: Windows 7 SP1
Notes:
- The addon will conflict with some Windows Updates (.NET 3.5 Family), so leave the addon's integration to the last.
- Add main addon first before LangPack addon, to get ASP.NET service localization properly.
- To function properly, .NET 4.7.x require D3DCompiler_47.dll component, which is found in either the current "Monthly Quality Rollup" or "update KB4019990". It is recommended to integrate it first, or you can install it later.
Windows6.1-KB4019990-x64.msu
Windows6.1-KB4019990-x86.msu
.NET 4.8:
Spoiler
.NET 4.7.2:
Spoiler
Languages Codes Reference:
Spoiler