Your password has expired

What the password-expired screen means, and how to set a new password.

Passwords are set to expire after a time. When yours does, Zimbra shows this screen the next time you sign in, and you cannot reach your mail until you set a new one.

The Zimbra expired-password screen, asking for the old password and a new one twice

Setting a new password

In Password, enter the password you have been using.
In New Password, enter the new one.
In Confirm, enter the new password again.
Click Sign In.

You are then signed in with the new password. Choose something strong and not used elsewhere: see choosing a strong password.