I've been getting this error for weeks now when downloading patterns that you have to pay the extra attached payment. In order to complete the download I've needed to pull up the pattern again and then double click on the download.
I also got this error for a few days. Then, Win 10 updated again, and it went away and hasn't come back. If you have a laptop, be sure you reboot it on occasion, not just close the lid. That makes a huge difference as well. Start Menu -- Power -- Restart.