If you are trying to run a LabVIEW 8.5.1 application on a modern system (Windows 10 or 11) in 2021, keep the following in mind: LabVIEW Run-Time Engine (RTE) - VA.gov
Using 2008-era software like on modern systems requires understanding its strict compatibility rules: LabVIEW and LabVIEW Run-Time Engine Compatibility - NI labview runtime engine 85 1 download 2021
: NI considers LabVIEW versions older than 2021 SP1 incompatible with Windows 11. NI Community How to Check if You Already Have It If you are trying to run a LabVIEW 8
: The most reliable way is through the NI LabVIEW Runtime Download page . You will need to log in and may need an active service agreement to access older archived versions. : As of 2021, downloading older software versions
: As of 2021, downloading older software versions often requires an active service agreement or a logged-in NI account associated with a registered serial number. System Compatibility and Requirements