If your wireless connection is interrupted or isn't working,
you won't be able to successfully update TurboTax for Windows. We recommend
using a wired, broadband connection with your TurboTax CD/Download software. If
you a wired connection available we recommend that you switch to that.
If downloading updates appears to freeze or stop at 0% or
100%, do not end the downloading process, even if the Task Manager displays
"Not Responding." Wait up to 15 minutes before doing anything.
If the Updater closes prematurely while you're
checking for updates (usually with an error message or number), run your
computer's disk cleanup tool to delete unnecessary files and empty the Recycle bin.
Then select Check for Updates in your TurboTax program to resume the update
process where it left off
If you can't update your TurboTax for Windows software using the normal update method, you can download and install a manual update file.
https://ttlc.intuit.com/replies/3301973
