TurboTax FAQ
TurboTax FAQ

Error 400: Bad request

An error occurred while attempting to communicate with an Intuit Update Server.

Possible Causes

  • The server may have received an incomplete or incorrect request.
  • The Intuit Update Server may be experiencing a system error or heavy load.
  • A personal firewall, router or proxy is interfering with communication between your computer and the Intuit Update Server.


To work around this issue, you can download a manual update instead.

If the problem reappears in the future when updating, follow these steps:

  1. Be sure your Internet connection is working properly.
  2. Retry updating by using Check for Updates on the Online menu in TurboTax.
  3. If updating fails, wait and try again later.
  4. If you have a home router, you may need to update your router's firmware. Go to the router's Web site to check if there's a firmware update. Download and install the update as instructed on the Web site.

Related Information: