Make a rule to not allow the ? character in the password field

Hello everyone.

I wonder if it’s possible to create a rule in order to not allow users to fill their password with the ‘?’ character. How can I implement it? I just want them to not be able to insert that special character and if they do, alert them with a message.
Another question I have is that, if I change that policy, Will old users have a problem if they already have a password with that character?

Thank you in advance.

Hi @Totodile,

FYI, I moved this topic out of our feedback category because it is a support question.

You cannot specifically limit the ? character.

No, existing passwords are not affected by password policy changes. Users will be able to log in with their existing passwords.

Hi @dan.woda .

Thank you for your answer.
Is there an option to, at least, put a message in the log-in page advising users not to fill that character?

You can customize New Universal Login Prompt texts using this:

https://auth0.com/docs/customize/universal-login-pages/customize-login-text-prompts

Because I’m curious, why do you want to exclude that character?