We are trying to transmit the return on the "It's time to sign and transmit your 2016 return' page, but pressing the transmit bar leads to nothing. What is missing?

[mesquitebean]

Are you using Online TurboTax?  Is the Transmit button not working; i.e., unresponsive?   It's most likely something in the browser that needs to be reset.  

It may be due to a CAPTCHA not appearing, where one would need to checkmark "I am not a robot."

• Log out and clear your browser Internet cache.
• Close the browser and reopen it.
• Make sure cookies are allowed/enabled in your browser settings so the CAPTCHA will appear.
• Log in and try again.
• If still unsuccessful, do all the above, then this time open a private window/private browsing (aka "incognito mode").
• Log in with the private window (again making sure cookies are allowed) and try the efile again
  

If that doesn't work, see if a different browser (with cookies allowed) will solve it.