Numlock glitch in WinServer2012 terminal, how to overcome?

Question

Windows Server

Hello,
I encountered a glitch in the operation of numlock in the windows server 2012 terminal. in the database written in access, which actually spins in the terminal, you need to enter a lot of numbers, and therefore the numeric keypad is actively used, and numlock (when it is visible) constantly crashes to work in the cursor mode, and vice versa, when the numlock is turned off, it starts working as a numeric keypad. and so many times in different places, then it works correctly, then it is "upside down". Maybe someone faced and overcame the problem?
On the site of small softs it is stated that this is a known problem, but no adequate solution has been proposed ...