Can I quit Turbo Tax where I am in the process without losing any data?

Of course! TurboTax Online automatically saves your work as you go through the interview.

Plus, when you sign out, we'll make sure to save everything before we log you out.

Once you've filed your return, we'll also give you the option to save a PDF copy of your tax return to your computer so you can view or print it without having to sign in again. More info

I can't quit the program.

It keeps asking to complete a password form and then will not save or close.

Please select Sign Out in the bottom-left corner of TurboTax. In addition to signing you out, this saves your work so you can later pick up where you left off.  TurboTax Online also is programmed to automatically save your work as you go through the interview.  

If this does not work, close the browser and restart the program.  You should be able to continue where you left off in TurboTax.