Can't complete update. After download I click install and relaunch, window clears and nothing happens. Opening program again does EXACT SAME THING. Every time.

I'm having same problem on Mac

@macuser_22
Do you have any suggestions for these 2 MAC users when you are next around?  Thanks!

I ended up deleting my 2017 return file off the desktop and emptying the trash...and started the return over completely.   Fixed everything except my lost time of course.

Is there a way to do this without losing my almost completed data?

@mm33ee - The .tax2017 data file that should be in your Documents Folder will not be affected by uninstalling the software.

If restarting the Mac does not solve it then:

Corruption could have occurred in the Application or in an associated preference or support file. To uninstall the application and all associated files need to be deleted and then the application reinstalled. If there was a state then the state must also be reinstalled.

Here is a FAQ for how to uninstall Mac
https://ttlc.intuit.com/questions/1901210-remove-uninstall-turbotax-for-mac

https://ttlc.intuit.com/questions/1901209-reinstall-turbotax-mac

Updating MacOS to the latest used to help me once in this situation, but now it's happening again.

I ended up deleting my 2017 return file off the desktop and emptying the trash...and started the return over completely.   Fixed everything except my lost time of course.