You can update the credentials used to access the Active Directory server.
Procedure
From the navigation pane, go to Protect > Applications > Active Directory.
The Active Directory page appears.
In the Name column, click the Active Directory server.
The Active Directory properties page appears.
On the Configuration tab, in the General section, next to User account, click Edit.
The Active Directory settings dialog box appears.
In the User account box, enter the user account needed to access the Active Directory server.
In the Password box, enter the password needed to access the Active Directory server.
In the Confirm Password box, retype the password.
Click Save.