VMWare vSphere: Managing Password Expiration Settings - VCenter

 You will need the dir-cli tool, which is located in /usr/lib/vmware-vmafd/bin/.

cd /usr/lib/vmware-vmafd/bin/

Check that the local user exists:

./dir-cli user find-by-name --account backup_user

You can change the password for this user:

./dir-cli password reset --account backup_user --password OldBackupP@$$ --new NewBackupP@$$

Or you can set password to never expire:

./dir-cli user modify --account backup_user --password-never-expires

You can change the password expiration settings for root or set it to never expire (if its value is 0).

Also you can check the root password expiration setting from your vCSA console:

chage -l root

source: https://woshub.com/vmware-password-expiration-settings/