# Set Password Expiration Date

When your password is expired, you cannot login. The [New Password] dialog box opens where you can set the new password.

Important:

- To increase security, we recommend you enable the setting(s).
- If you use GP-4100 Series without the RTC Battery Set (option), this settings is not available.

You can configure the settings at following property window.

1. In the Project Explorer window, go to [Security] and click [Settings].
2. In the Properties window, click [Basic] tab.

[Password Expiration]
Select this check box to specify password expiration. The password validity period is specified in [Password Expiration Period (Day)]. To increase security, we recommend you select this check box. If you use GP-4100 Series without the RTC Battery Set (option), this property does not work. When your password is expired, you cannot login. The [New Password] dialog box opens where you can set the new password.

[Password Expiration Period (Day)]
Set the period, in days, until the password is expired after last password update. Setting Value Range: 1 - 365 You can use this property if the [Password Expiration] is selected.
Note: You can check the number of days remaining valid for the password of the logged-in user in the target source property (SecuritySettings.CurrentUserAvailableDay). When the project file is transferred to the display unit without keeping User Management data, the expiration date for all users is extended because the last update date of the password is updated to the project file transferring date. When you import the user information file, the expiration date for updated users is extended because the last update date of the password is updated to the file import execution date.