You can download it directly from Microsoft’s CDN here:
The official offline installer files are hosted on the Microsoft Download Center . Common versions include: : Download from Microsoft (id=30653). 4.5.1 Update : Download from Microsoft (id=40779) . 4.5.2 Update : Download from Microsoft (id=42642) . microsoft net framework 4.5 offline installer
You have the 50 MB file. Now what? Installation is straightforward, but there are nuances. You can download it directly from Microsoft’s CDN
: Significant updates to ASP.NET, Managed Extensibility Framework (MEF), and Windows Communication Foundation (WCF). Managed Extensibility Framework (MEF)
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