When logged on to a Windows 2012 server through an RDP through another RDP connection on an Apple laptop, changing the password can be a challenge, especially if the account on this 2012 machine is not the same as on the machine you used to connect to the 2012 machine (try saying that sentence 5 times in a row).
So you’re logged on to a Windows 2012 server and you need to change the password of the actual account you’re using at that moment.
Click on the windows flag in the lower left of the screen and type this Powershell command:
Powershell -noprofile -nologo -noninteractive -command “(new-object -ComObject shell.application).WindowsSecurity()”
It doesn’t look pretty, but since I cannot find any alternative, it’s the best I can do.