For everyone else, it’s a silent, efficient workhorse that lets millions of Windows users launch their Store apps in milliseconds – without ever knowing its name.
Nevertheless, hundreds of existing Store apps (Spotify, Netflix’s older UWP client, many line-of-business apps) still depend on version 1.7. It will remain in Windows servicing for the supported lifetime of Windows 10/11 (likely through 2030+ for LTSC editions). microsoft.net.native.framework.1.7 is a fascinating artifact of Microsoft’s attempt to reconcile managed code productivity with C++ performance in the sandboxed UWP world. It is a shared, native, OS-provided runtime – a hybrid between the old .NET Framework and a modern app-local runtime. For developers and system administrators, it’s a critical dependency to recognize when debugging app installation or startup failures. microsoft.net.native.framework.1.7
<PackageDependency Name="Microsoft.Net.Native.Framework.1.7" MinVersion="1.7.25531.0" /> If that package is absent, installation fails. This is why older apps may refuse to run on a clean Windows install without Store updates. Do not confuse microsoft.net.native.framework.1.7 with: For everyone else, it’s a silent, efficient workhorse
| File (examples) | Role | |----------------|------| | mrt100_app.dll | Managed runtime (GC, thread pool, AppDomain-like contexts) | | clrcompression.dll | Compression helpers for metadata | | System.Private.CoreLib.Native.dll | Low-level core library native helpers | | System.Native.dll | OS abstraction layer (file I/O, environment, etc.) | | Runtime.WinRT.*.dll | WinRT interop and activation | microsoft
However, the .NET runtime itself – garbage collector, low-level type system, exception handling, reflection stubs, and interop helpers – cannot be fully AOT-compiled per app without massive duplication. The solution: installed once on the system, which all .NET Native apps link against.
1. Executive Summary microsoft.net.native.framework.1.7 is not a typical .NET assembly you'd reference directly in a C# project. Instead, it is a runtime package component of the .NET Native toolchain, specifically version 1.7. It represents a pre-compiled, architecture-specific set of core runtime libraries required to execute UWP (Universal Windows Platform) and certain desktop bridge applications compiled with .NET Native.