If you find that you need to switch the operating system of your hosting account, you can do so at any time.
To Switch Your Hosting Account Operating System
This change may make take up to 72 hours depending on the size of the site, the number of databases and other factors that may increase the complexity of the migration. You will receive a email message when we complete your upgrade.
NOTE: If your Web site contains certain advanced features, such as ASP, ASP.NET, CGI, or PHP applications and you select a hosting plan that does not support those advanced features, your Web site may no longer function properly after the plan change. Please make sure your Web site does not contain advanced features BEFORE moving to a plan that may not support them or be prepared to modify your Web content accordingly.
NOTE: If you created databases that are incompatible with the new operating system, you must delete them before proceeding. Data existing in compatible databases will be preserved.