Search notes:

Registry: HKEY_LOCAL_MACHINE\SOFTWARE\DefaultUserEnvironment

After a fresh installation of Windows 10, the registry key HKEY_LOCAL_MACHINE\SOFTWARE\DefaultUserEnvironment contains the following three values whose type is type is REG_EXPAND_SZ:
Path %USERPROFILE%\AppData\Local\Microsoft\WindowsApps;
TEMP %USERPROFILE%\AppData\Local\Temp
TMP %USERPROFILE%\AppData\Local\Temp
Note the semicolon (;) in the value of Path.

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