Launch a browser window and enter the Administration Console URL displayed in the vSphere vCenter Console tab for the virtual machine you want to configure or use the link from the . The URL uses the following format and is case sensitive: https://<ApplianceIPAddress>
In the left pane, click VCENTER REGISTRATION. The registered vCenters are displayed in a table. To display the Modify Admin Acct window, under Credentials, click Modify.
Enter the vCenter Administrator User Name, Password, and Verify Password; the passwords must match.
To change the password, click Apply, or to cancel the change click Cancel.