User Configuration > Administrative Templates > Microsoft Word 2016 > Word Options > Security > Cryptography
User
HKCU\software\policies\microsoft\office\16.0\word\security\crypto
This policy setting allows you to configure the CNG random number generator to use. If you enable this policy setting, the random number generator specified will be used. If you disable or do not configure this policy setting, the default random number generator will be used.