Hello,
In order to update Turbotax for Mac, some steps to follow are:
- Make sure you're running the program from the Applications folder, not from a mounted virtual drive or CD
- Wireless connections can be problematic. We recommend updating over a wired, broadband connection
- If you don't have access to broadband, try restarting your wireless router
- Empty the Trash
- Force the update to download and install
- If you're still having problems, turn off your computer, then your router, and lastly your modem, in that order
- Wait a minute or two, then turn your modem back on
- Wait another minute, then turn your router back on
- Once your router is back up, turn your computer back on and try updating again
For further reference, please see:
https://ttlc.intuit.com/turbotax-support/en-us/help-article/update-products/troubleshoot-turbotax-mac-updating-issues/L2QTZw9Xr_US_en_US
As a final workaround, you can try using TurboTax Online which is browser based and doesn't require updates. For Turbotax Online for individual personal taxes, please see:
https://turbotax.intuit.com/personal-taxes/online/
Best regards!