RESOLVED:

In addressing the bug If you add a user when the minimum password length > 14, user fails to save, the developers added some code that does something like creating a password with a length equal to minRequiredPasswordLength, which is a value in web.Config. The community experiencing this issue had modified the password settings to utilize a regular expression (passwordStrengthRegularExpression="(?=.{9,})(?=(.*\d){1,})(?=(.*\W){1,})(?=.*?[A-Z])(?=.*?[a-z])") and had removed the minRequiredPasswordLength code. Therefore, it was most likely unable to generate a password for new users. Resetting these customizations allowed the community to once again add new users.

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