You can have multiple versions of the LabVIEW Runtime Engine installed on one PC. Installing 8.5.1 will not break your 2023 or 2024 versions.

Instructions: Select from the dropdown menu to start the download. Direct Support Directory: NI Runtime Index

The drive clicked again, then fell silent. The progress bar jumped to 100%. Setup completed successfully.

The need for a is a testament to the longevity of engineering hardware. While many guides will tell you to "just upgrade to 2023," they ignore the reality that a $50,000 PXI chassis running Windows XP cannot be upgraded without replacing backplanes, controllers, and FPGA cards.