The 2019 Turbotax Delux download can not be opened on a Mac using Catalina OS 10.15.1. Apple says "contact developer".

[Critter]

Actually this is a MAC issue ...  https://ttlc.intuit.com/community/troubleshooting/help/turbotax-for-mac-won-t-open-when-installed/00...

[js72]

Your procedure worked fine.  Thank you!

I wonder why TurboTax support help couldn't tell me this a few weeks ago when I called.  I've used TT for years and never had a problem like this. 

I upgraded Catalina to 10.15.2 today and re-downloaded TT 2019 Deluxe and got the same non-start that happened before.  I thought I would try this site this time instead of calling Support.  Your fixit did the trick.

Catalina seems to have introduced several problems that didn't exist before.  Thanks again.