The NI Community Forums (forums.ni.com) have an active “Legacy Software” section where engineers still answer 8.5.1 questions daily. Good luck, and keep your legacy systems running smoothly.
It is important to clarify the specific version requested to ensure correct installation: labview runtime engine 85 1 download 2021
Official download: https://www.ni.com/en/support/downloads/software-products/download.labview-runtime-engine.html → Select “2021” from the version dropdown. The NI Community Forums (forums
| Problem | Solution | |---------|----------| | “This app can’t run on your PC” | 8.5.1 is 32‑bit – run on 32‑bit OS or use 32‑bit compatibility mode on 64‑bit Windows | | Missing DLL errors | Reinstall runtime or update VC++ redistributables (2005/2008) | | Can’t find download | Use NI’s (requires login) | labview runtime engine 85 1 download 2021