By default, vCenter Server changes the vpxuser password automatically every 30 days. You can change that value from the vSphere Web Client.

1

Select the vCenter Server in the vSphere Web Client object hierarchy.

2

Click the Manage tab and the Settings subtab.

3

Click Advanced Settings and enter VimPasswordExpirationInDays in the filter box.

4

Set VirtualCenter.VimPasswordExpirationInDays to comply with your requirements.