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The Msix64 property is defined only if running on an x64 processor. The value is set by the installer to the numeric processor level. The values are the same as the wProcessorLevel field of the SYSTEM_INFO structure.
Windows Installer 2.0 and Windows Installer 3.0: Not supported. The Msix64 property is available beginning with Windows Installer 3.1.
| Requirement | Value |
|---|---|
| Version |
Windows Installer 5.0 on Windows Server 2012, Windows 8, Windows Server 2008 R2 or Windows 7. Windows Installer 4.0 or Windows Installer 4.5 on Windows Server 2008 or Windows Vista. Windows Installer 3.1 or later on Windows Server 2003, Windows XP, and Windows 2000 |