TurboTax updated, now not responding? Why won't it open?

I found that I needed to open a browser window before starting TurboTax 2018 for Mac as the first program I opened. Without the browser Turbotax seems to pretend to open but then quits. As soon as I opened the browser then TurboTax was able to open and check for updates (which I hope fixed the issue). I am using a wifi connection. 

yes

Similar problem. Latest windows 10 installed, program was running fine yesterday.  An Update appeared today, now it wont start. Just keeps telling me to switch tasks!!!! Like what? I put quite a bit of time inputting data , I dont want to redo. This is very poor. Doesnt anyone check software updates anymore??

I purchased Turbotax 2019 from Amazon, downloaded it, dragged it to my application as instructed but it won't open. It says, "you can't open the application TurboTax Delux 2019 because it is not responding. Very frustrating particularly, I only have few days to file income tax before the deadline. I called Amazon and they refunded my money and repurchased it again, problem is still the same. I guess, I'll just have to go to the store and purchase it.

MacOS updated as of 10 Jul 2020, TT as of late March 2020.  Had the same problem -- program would start, detect a pending update, and hang.  I observed that the head processes in the execution stack was not consuming cpu cycles or storage bandwidth, or requesting network I/O.  Stdsig's (SIG_HUP) resulted in the stack immediately exiting clean (exit=0) so I re-started it sandboxed (snitch, kvm, wireshark, audit) and found that it was completing what appeared to be a successful upstream connect, get, download, and (storage) write, but that the last storage I/O was closure of the download cachefile.  It never moved the cachefile to a proper filename nor did it attempt to re-open (ie., the "hang" was the program sitting there with no active filehandle on the updated it just successfully downloaded).  Looked like it has trouble either transitioning from the download phase or in starting the apply-update phase of the normal update cycle.

My fix:  disconnect and isolate:

1.  Stop TT (via 'quit' option of taskbar since TT would not open any window or activate any menus other than "Updating", which did nothing).

2.  Set all network interfaces down and non-autostart on next boot.

3.  Clean shutdown, poweroff (this is to prevent a shortcut that Linux and OSX can do on "reboot" depending on your bundle and age, a plain "reboot" is all Windows requires).

4.  Poweron and boot normally.  Verify no networking.

5.  Start TT, it will complain about inability to connect upstream but will then let you proceed.

6.  Main window should now come up.  Re-enable networking and "check for updates" via TT menu as you would normally for a manual update check.

7.  At this point TT behaved normally -- download to cachefile, move to tmpfile, re-open, apply, auto-restart, update installed on restart, main window opened after application of update as per normal ops.

8.  Open previously saved tax file as normal, everything from here out gave no indication of any problem.

Yup.  Same problem.  For TT2019 and Windows 10 Users, do the following... turn off all anti-virus prior to installation.  Uninstall and reinstall TT2019 as necessary.  Upon reinstallation, locate Turbotax.exe in your Program Files (x86) folder.  Right click on this executable file and open Properties.  Goto Compatibility.  Select to run in compatibility mode for Windows 8.  Windows 10 is a 64-bit program that runs similar bit progams natively.  You must use compatibility mode to run TurboTax 2019 in 32-bit mode because it was written as a 32-bit program.  This is and AV interference are why your program isn't opening, or opens and closes right away.  Add the TuboTax 2019 folder and executable file to your "exceptions" list in your AV software so it will leave it alone. Update your TT2019 SW as needed for the latest forms.  You should be good to go.  Mine is working now.  Don't know if a 64-bit TT2019 version was available?  If not, TT needs to recode their program code base for 64-bit.  Yes, it's expensive...  but it's a must if you want to be around tomorrow.  I shudder at how many people TT is letting walk away when folks have a bad installation experience because they are not compatible with modern Laptop/Workstation Hardware/Software.   Many will return their SW in frustration and seek other SW.  Staying current with today's IT trends is rudimentary to TT's going concern.  Folks will grow wise to overpaying for obsolete software.  Admit I bought/downloaded from AMZN website... wonder if 64-bit was an option somewhere?

I struggled with the Home & Business for about 8 hours. All I got was "update" and other nonsensical runarounds.

I finally Uninstalled TurboTax completely. I did not Repair. Repair did not work.

I did a Disk Clean and Reinstalled. 

It updated automatically and I am now finally using it after 10 hours of NONSENSE.

I think it was possibly Win 10 Updates since I originally installed TurboTax.

I have been using Turbo Tax since it was invented, I buy the Premier version, and downloaded, I have an i7 computer...I should NOT have problems doing the California return. Can someone help me? Why doesn't turbo tax help me on the phone, I called them...they told me to log in here? I am supposed to have customer service since I bought this at costco!!!