Which Windows registry key to read to determine architectur? x86 or x64 ?


Can someone let me know which registry key in Windows Vista (or Windows 7) I can read in from a VB script to determine if the OS installed is a x64 or x86 installation (32bit or 64bit)?

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larry urbanDevOps EngineerCommented:
"HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment\PROCESSOR_ARCHITECTURE"

If the value of PROCESSOR_ARCHITECTURE is "x86" then you have a 32 bit version of Windows.

if the value of PROCESSOR_ARCHITECTURE is not "x86" then your machine is potentially a 64-Bit.

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Windows Vista

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