Ok, so after my first day yesterday after a rather long vacation I today wanted to look at the problem that the Administrator password isn’t changed when using VirtulCenter’s clone customization functionality (which relies at least for Windows on sysprep).
After a short googling, I stumbled upon this.
Simple problem short … Don’t specify an Administrator password for the template. Then you should be able to change the Administrator password when cloning the template. It’s " should", as the VM’s are still updating.
And it really works. After emptying the Administator password, the cloning works just fine. Damn sysprep bug …