When you purchase an OVH dedicated server and select to install ESXi, you'll receive a temporary password. What they fail to mention is that the password you're sent expires after around 30 days. OVH is unable to reset the password and does not have a record of it. Their response is to reinstall the ESXi server and copy off any data from your ESXi hosts beforehand. Obviously, this is a very poor response from OVH and there was no way in the world we were about to perform a full reinstallation.