The Windows XP and Windows Vista operating systems have 64 bit versions. Special consideration must be given when installing and updating software on 64 bit operating systems. These 64 bit operating systems have a 32 bit sub-system for compatibility with 32 bit software. AppLife Update provides update authors the ability to specifically target the 32-bit sub-system registry and file system. Update authors can also explicitly register 32 bit and 64 bit COM assemblies.
Applications built to execute in 64-bit mode will automatically integrate with the 64-bit system, and 32-bit applications will automatically interact with the 32-bit sub-system. Installers are not as straightforward and care must be taken to ensure applications operate as expected when installed on a 64-bit Windows operating system.
With AppLife Update, any action configured to target an x86 sub-system on 64-bit operating systems will also target the equivalent location on 32-bit operating systems.