I had the same error using our domain login. I would get this error every time on the domain account, rebooted and tried a few times and I got the same error every time. I then switched to the local account and the update installed fine.
Found the answer by Hank Chandless on:
https://social.technet.microsoft.com/Forums/en-US/726ad1c3-721b-4e86-8682-2835bfb0d784/update-error-code-0x80070520-fblimpressive-10041-professional?forum=WinPreview2014Setup