1. Download myTaxExpress or T2Express Mac version software (a .zip file). Usually it is downloaded in Download folder.
2. Latest Mac OS will automatically unzip the downloaded .zip file in Download folder; if not, please unzip it by right clicking mouse and choose open from popup menu. It will unzip the program in same folder. Unzip creates an App, like "mytaxexpress2012_netfile" for tax year 2012. Don't manually unzip into Application folder manually, it must be unzipped in original downloaded folder.
3. Since Mac OS Sierra, it's required that you move the unzipped App into Application folder. For detail, you can also read this FAQ item.
4. Double click the "mytaxexpress 20xx" icon from Application folder to run myTaxExpress. If you encounter error of "Unidentified Developer", please keep holding down Ctrl key and right click mouse on the App, then choose Open to run myTaxExpress/T2Express software.
Tags: developer, MAC, pinfo.list, Setup, unidentified