To change Server Credentials, perform the following steps.
- At the Confirm selection pane, select a virtual machine.
 The Change Server Credentials button is enabled.
- Click the Change Server Credentials button.
 The credentials pop-up is displayed. 
- Make your changes, and then click OK. .
 Note 1: The backup set relies on these credentials to perform the backup. Use credentials that do not change often, else the backup fails.
 Note 2: You can authenticate to the following:
- Unmanaged ESXi host
- vCenter that manages one or more ESXi hosts
