I have purchased a copy of Home & Business Turbotax. However, the download fails to open.

[VolvoGirl · Accepted solution]

Sorry looks like you are posting from Mac OS 10.10.  You need OS 10.11.6.  You need to upgrade you Mac or you can get a refund and then you can use the online version here, https://turbotax.intuit.com/personal-taxes/online/ 

Mac System Requirements https://ttlc.intuit.com/questions/1899173-minimum-system-requirements-for-turbotax-mac-software 

Call in for a refund. When you fill out the from use the word BILLING ISSUES instead of the word “refund.” Contact Customer Service 7 days a week 5AM-9PM Pacific time https://support.turbotax.intuit.com/contact/