After you install the vSphere Client, you can connect to an 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, take one of the following actions.



Log in to an ESXi host.

Log in as root or as a normal user.

Log in to a vCenter Server system as the administrator.


Type the vCenter Server IP address or host name.


Type 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.


Click Login.

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


To ignore the security warnings that appear, click Ignore.

Security warning messages appear because the vSphere Client detects certificates signed by the ESXi host or vCenter Server system (default setting).