Most likely is that the driver is not signed. Windows 64-bit requires a signed device driver files. You need to work this out with National Instruments to see if they have a solution.
You can disable device driver enforcement, but it is not recommended: https://www.thewindowsclub.com/disable-driver-signature-enforcement-windows#:~:text=%20Disable%20Driver%20Signature%20Enforcement%20on%20Windows%2010,first%20option%20will%20disable%20the%20driver...%20More%20
-Sean Liming