After you install the vSphere Client, you can connect to an ESX/ESXi host and to a vCenter Server system.


Do not use the Windows built-in Guest account to start the vSphere Client. By default, the Guest Account is disabled. When you use the Guest account to log in to Windows, you cannot access the applications that are already installed on the computer.


Select Start > Programs > VMware > VMware vSphere Client.


In the vSphere Client login window, log in to an ESX/ESXi host as root or as a normal user, or log in to a vCenter Server system as the administrator.


Enter the IP address or host name.


Enter your user name and password.

When you connect to the vCenter Server, use the vCenter Server IP address with your Windows login user name and password. Use the login credentials appropriate to the Windows machine on which vCenter Server is installed. The vCenter Server user name and password might be different than the user name and password that you use for ESX/ESXi.


Click Login.

If you cannot connect to the vCenter Server system, you might need to start the VMware VirtualCenter Management Webservices service manually. To do this, select Settings > Control Panel > Administrative Tools > Services > VMware VirtualCenter Management Webservices and start the service. The machine might require several minutes to start the service.


To ignore the security warnings that appear, click Ignore.

Security warning messages appear because the vSphere Client detects certificates signed by the ESX/ESXi host or vCenter Server system (default setting). For highly secure environments, certificates generated by a trusted third-party are recommended.