You need to enable the administrator account
Enable automatic user login for a VMware Workstation virtual machine
Yesterday I set up a test network using VMware Server. I started installing VMware Server and then I realized that VMware uses your Windows machine credentials to log into the console. However, if you are using an account other than the built-in Administrator account, you will likely have trouble logging into the VMware Console. You will get the following error:
So, to successfully log in, you need to use the built-in Administrator account on Windows XP. If you are using Windows Vista, you need to enable the Administrator account there as well. This account also needs to be set up with a password.
To enable the administrator account in Windows Vista, do the following: