These shell extensions were written to help distinguish between .NET assemblies and Win32 libraries, as well as give extra information about the assemblies without having to drop to a command-prompt to use the SDK and CLR tools. These shell extensions function similar to the loader that makes both .NET and VB (pre-.NET) possible as executable code: the PE/COFF header. As such, the library is very fast and won't hinder your file system browsing experience. A recent update further enhances performance by skipping assembly detection on slow paths, such as UNC paths or drive mappings to remote filesystems via VPN.
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