You may need to switch browsers, Make sure your return is saved in your TurboTax account and then sign out. Clear the cache and delete the cookies on your computer, open a new browser, sign back into your account and try printing again.
You can download the TurboTax file for your online return to your computer by following these steps:
To print from your browser, look for Print under the File menu of your browser.
Under Print, you'll be able to choose to Save as PDF (it may be called Print as PDF or View as PDF).
Some browsers will add an extra step and open a preview window and then ask if you want to Save as PDF or Print. Choose Print.
Once the file has been saved as a PDF, it should be easy to print. Be sure to note the location/folder where you save your PDF.
If you have problems printing your PDF, Adobe has suggestions on what to do.
https://ttlc.intuit.com/community/printing/help/troubleshoot-printing-issues/00/27086