By any chance are you running Spybot search and destroy or other malware software?
It appears you're not the only one that's had the issue as a google search returns a lot of things to try.....
Heck, I surf with fire fox.....and run the ad block plus add-on and a no script add on with it....
I've got a couple of windows 10 machines setup and running......including this one that I'm posting from, which is a virtual machine.....yet I'm still on firefox...
neither spybot or other malware software.
I have McAfee and windows defender and use both regularly, plus the malicus spyware from microsoft every month. I have done all of windows trouble shooters with no results .
windows update will download and install right up to the very end , then it fails and says it is a 9c59 error. then when I check on that I get an
Ox80070490 (2015-9-13T 09_59_41A) And I have tried microsoft fixes for that error code with no results.
Downloading IE 10 results in the same errors.
I am thinking the problem might be in the registery, something corrupt or missing.
Going to look and see if I can find a program to check and fix the registery.
I also think microsoft might be doing something also because I read an article that says microsoft is not happy that few are downloading the free Windows 10. And that Windows 10 is full of sypware that collects data and other stuff and then sends it to microsoft. Since everybody is not switching to Window 10 from Win 7 or win 8 they are putting some of the parts that spy on you in the windows Updates for 7, 8, 8.1 . The updates are KB3075249 and KB308149. IE11 is what comes with windows 10.
I checked and those updates were on my computer, so I deleted them and nothing happened that was funny or anything. but it still didn't solve the problem.