The runtime is unsupported by NI since 2015. Begin planning a migration to a newer LabVIEW version (2021 or later) or to a different programming environment. Use tools like the LabVIEW Upgrade Advisor (available in newer LabVIEW versions) to assess VI compatibility.
If your organization still relies on LabVIEW 8.6 executables, following these best practices will reduce downtime and security risks. labview runtime engine version 8.6
Using the LabVIEW 8.6 Application Builder, bundle the runtime engine into your application installer. This ensures end users never have to download it separately. The runtime is unsupported by NI since 2015