TurboTax FAQ
TurboTax FAQ

Error 40: Failed to download

When checking for updates in TurboTax, the following error message appears:

Failed to download Error 40

The "Further details" section in the error window contains another message, for example:

  • The operation timed out
  • A connection with the server could not be established
  • The server did not return the file size. The URL might point to dynamic...
  • The server returned an invalid or unrecognized response
  • The server name or address could not be resolved
  • The connection with the server was terminated abnormally
  • There are currently no active network connections...
  • An internal error occurred in the Microsoft Windows HTTP Services

The message may also contain a very long Web address similar to the shortened one below:


Possible Causes

Error 40 is a generic download error that can be caused by many different things, including but not limited to

  • A slow internet connection (dial-up)
  • Interference from a firewall or web accelerator program 
  • A malfunctioning Windows component Background Intelligent Transfer Service (BITS)


Try these workarounds:

  • If you receive Error 40 while updating through TurboTax, try downloading and installing a manual update instead.
  • Try disabling your web accelerator program if you have one. Web Accelerators (also called dial-up or download accelerators) are programs that speed up the downloading of large files, and are mostly used by dial-up customers.
  • Try configuring your firewall to work with TurboTax. Or, temporarily disable your firewall software before downloading your update or state program. (Remember to turn it back on when finished.)