If you have a current support subscription to MYOB, log-on to your my.myob account at www.my.myob.com. Then go to My Products / Downloads - where you should see a download link for your software. If you don't have a current support plan, send a private message to one of the MYOB Support Staff on this Forum, including your serial number and ask them to provide a download link.
Note - AccountRight 2017 is a fine product, that runs well on Windows 10 and has some great new features - such as Bank Feeds, online invoices and the InBox for supplier invoices. You would only need to stick with v. 18 if you have Premier v.18 and need its' multi-currency feature (AR 2017 dosn't yet have this).
