I am using VMWare vCenter 4.1.0 Build 345043 and I have created a template from a virtual machine. I am using the Guest Customization wizard right before I start the cloning process to configure things like machine name and which domain to join. I am checking the Generate New SID option. The template I am cloning from is a Windows 2008 R2 X64 Standard Virtual Machine. I should be allowed to use the Guest Customization functionality according to this url: http://www.vmware.com/support/vsphere4/doc/vsp_vc41_u1_rel_notes.html
Additional Guest Operating System Customization Support: vCenter Server now supports customization of the following guest operating systems: Windows 7 SP1 (x32 and x64) Windows Server 2008 R2 SP1 (x32 and x64)
Whenever my clone is finished, I can access the machine via the Console, but I cannot login. It tells me wrong username/password if I try to login using domain credentials, and it tells me no logon servers can be found when I try to login locally. I have verified I am typing my password correctly, so I know that isn't the problem.
Additionally, if I sit at the console long enough, the system will shutdown, and upon reboot it will say something about autochk and blue screen saying something about the session not being initialized. It happens so fast it is very hard to catch what it says exactly.
I have only gotten this error in conjunction with the guest customization wizard. If I clone this template without using the guest customization wizard, I can operate the VM normally.
Edit: I found an option to "Deploy VM from this template" instead of Cloning, and this seems to avoid the blue screen from happening, but now it doesn't join the new VM to the domain.