How to disable password auth for existing user

Question

I have an existing user who can log in with a password.

This user will be changed to a certificate based authentication.

How can I delete the password authentication for this user?

When I create a new user this is possible directly but I can't find a way to do this for an existing user.

Comments

Hi,

Can you provide more detail? Which protocol are they using at the moment when they use their password. Which protocol will they use without password authentication?

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Sorry for the late answer...
All users use sftp.
So I want to change a user from password authentication to public key.
For this I want to remove the password from his account

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Go to the Users panel, select the user, then look for a setting called 'Methods (SSH)' in the User Properties panel. Uncheck 'Password' and click Apply Changes. You can also overwrite the password, but that's not necessary as it can't be used.

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Unfortunately, I can't find the setting you describe.

I have added a photo to the post above that shows my user settings

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That may be because the setting isn't included in the edition of CompleteFTP that you're using. If you open a support ticket we can give you an alternative way of disabling password authentication for a specific user.