# Change Authentication Password
Device Management > Address Book > Add User (Detail Input) > Change Authentication Password
Device Management > Address Book > Change User (Detail Input) > Change Authentication Password

You can set or change an individual user's password for user authentication, SMTP Authentication, LDAP Authentication, or Folder Authentication.

### New Password

Enter a password for authentication, using up to the number of characters specified below.

#### User Authentication

Up to 128 alphanumeric characters. Minimum character limits vary depending on the machine's password policy settings.

#### SMTP Authentication

Up to 128 alphanumeric characters. Spaces cannot be used.

#### LDAP Authentication

Up to 128 characters.

#### Folder Authentication

Up to 64 alphanumeric characters.

### Confirm Password

Enter the new password again to confirm it.
The password entered here must be the same as that entered earlier in New Password. If it is not, the password cannot be changed.

## Buttons

### OK

Click to apply the settings.

### Cancel

Click to cancel the settings.

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