A 64-bit package consists partially or entirely of 64-bit Windows Installer components. The following list identifies the requirements for every 64-bit Windows Installer package:

• The value "Intel64" must be entered in the platform field of the Template Summary property if and only if the package runs on an Intel64 processor.
• The value "x64" must be entered in the platform field of the Template Summary property if and only if the package runs on an x64 processor.
• The Page Count Summary property must be set to the integer 200 or greater, because Windows Installer 2.0 is the minimum version that is capable of installing 64-bit components.
• Each 64-bit Windows Installer component in the package must include the msidbComponentAttributes64bit bit in the Attributes column of the Component Table.

For more information, see Windows Installer on 64-bit Operating Systems and 32-bit Windows Installer Packages.

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Build date: 8/13/2009