NuGet ignores our service-level USERPROFILE override (it uses
SHGetKnownFolderPath which returns LocalSystem's profile regardless of
the env var) and installs packages to C:\Windows\system32\configsystemprofile\.nuget\packages. 32-bit MSBuild then can't find them because
the Win32 File System Redirector silently shunts system32 paths to
SysWOW64 for 32-bit processes -> NETSDK1064 'package not found'.
NUGET_PACKAGES is NuGet's highest-priority package-folder override and
puts everything outside system32, so both restore and build agree on
paths and the redirector never gets involved.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
chaim
399fd24f4d