: LabVIEW 8.5.1 was originally designed for Windows Vista and XP. While it may function on Windows 10, it is not officially supported, and NI recommends upgrading to a newer version for stable performance on Windows 10 or 11.
The only authorized and safe source for LabVIEW Run-Time Engine 8.5.1 is via their support portal (now part of Emerson). While older versions are often hidden from the main download pages, they are typically preserved in the archive for customers with valid service agreements. labview runtime engine 85 1 download 2021
Version 8.5.1 has been archived by National Instruments. You find it on the main "LabVIEW Runtime Download" page, which currently lists versions from 2017 onwards. : LabVIEW 8
LabVIEW runtime environments are not broadly backward-compatible for applications. If an application was compiled in LabVIEW 2021 SP1, it may throw an error if forced to run on a standard base 2021 runtime engine. Always check with the application developer to confirm the exact build version. While older versions are often hidden from the