You should be able to resolve this issue by manually deleting the Autocomplete History.

To Remove Autocomplete History:

  1. Go to your Desktop and hold the Windows Start key on your keyboard, and press the R key.
  2. Type inetcpl.cpl into the Run box and press ENTER.
  3. Go to the Content tab
  4. In the AutoComplete Section click Settings
  5. Click Delete AutoComplete history…
  6. Click Delete
  7. Then click OK

In the Auto-Complete Settings you are also able to choose what areas you want to use the Auto-Complete setting for.

You can also visit the links below for instructions to disable autocomplete in your browser: