Why am I getting a blank white page, Error 400, or Error 413 on TurboTax.com?
Some customers are experiencing a blank white screen, Error 400, or Error 413 when using TurboTax.com
If you're experiencing any of the issues above, try completely shutting down your web browser and relaunching it.
If this doesn't work, try to delete your cookies.
Please see the above support article for assistance deleting cookies: