They Tatsiana -
There should be no difference in browser behavior. I just tested this and could download a workbook published AS a TWB with either Chrome or IE -- see attached pic:
Above you see me downloading the twb from Chrome, on the bottom, IE.
Perhaps the workbook you attempted to download in Chrome actually only exists AS a TWBX and you downloaded a different one from IE?
I'm downloading the same file, but when I do that from tableau server i get what i want. But when from the special site (unfortunately can't give you a link), in IE it downloads twbx, in chrome archive. I'm at loss:(
Yeah, this doesn't make sense. Can you repro it with another workbook besides the one you just worked with?
What type of site is the 'special site'? Is it a Tableau Server?
When the file downloads in Chrome, what's the exact file extension it's saved with?
Are you able to right click the link and select Save Link As in Chrome? What happens?