Updating Plesk 10 to Plesk 11 on Windows
Upgrading Plesk 10 to Plesk 11 *should* be a relatively straightforward process. These are the steps I followed in order to update Plesk 10 (10.4.4) to Plesk 11 (11.0.9) running on a Windows dedicated server 2008 with hosting providers 1&1 internet.