Windows ARM64 (1.1.0-insiders3): Windows SDK paths aren't auto-detected for IntelliSense

[sean-mcmanus]

...this is causing missing include errors when #include <string> etc. are used.

One workaround is to add the paths manually, e.g.

"C_Cpp.default.systemIncludePath": [
        "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC\\14.27.29110\\include",
        "C:\\Program Files (x86)\\Windows Kits\\10\\Include\\10.0.18362.0\\um",
        "C:\\Program Files (x86)\\Windows Kits\\10\\Include\\10.0.18362.0\\ucrt",
        "C:\\Program Files (x86)\\Windows Kits\\10\\Include\\10.0.18362.0\\shared",
        "C:\\Program Files (x86)\\Windows Kits\\10\\Include\\10.0.18362.0\\winrt",
        "C:\\Program Files (x86)\\Windows Kits\\10\\Include\\10.0.18362.0\\cppwinrt"
]

Also, the "windowsSDKVersion" in the default c_cpp_properties.json is blank instead of something like "10.0.18362.0".

[sean-mcmanus]

Looks like a problem with the ARM64 process not reading the WOW6432Node regkey value.