Any user who installs the ESXi hypervisor must set the root password, but users and administrators cannot change the ESXi default password if it gets forgotten/lost. This approach may not be the best from s security point of view, but sometimes it’s inevitable. When an ESXi server is set up and configured, everything is working correctly, a system administrator may not log in to the ESXi server for a long time. The ESXi host can be restarted sometimes after power failures or some other issues. However, the password is not required if you are not going to reboot the ESXi host from the ESXi console. Time goes on and the server is working properly, but at some point, a system administrator may want to make some changes in the ESXi server’s configuration. They try to enter the root password that is required to log in and reconfigure the server, only to discover that the password has been forgotten.
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