From Friday, April 19th (11:00 PM CDT) through Saturday, April 20th (2:00 PM CDT), 2024, ni.com will undergo system upgrades that may result in temporary service interruption.
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32-bit, Lookout cannot take advantage of the additional memory of the 64-bit addresses. But should work on both, my dev machine is Windows 7 x64 with Lookout 6.2 working well enough.