80200013 8 means it's an error. That's obvious 0x20 = This is the background copy facility 0x0013 = Media is write protected
Someone is trying to write to a write protected media. You may need to download Process Monitor - Windows Sysinternals and look for access denied messages during updates if that's when you get this message. If you have anti-virus/malware you may want to temporarily disable them and try again.
Could be an issue with BITS which is how Windows update download too.
Also may have been the result of the thread merge. I didn't see that you were on build 1511. This build is EOL, meaning it doesn't get security updates. You should be on at least build 1607 to get any update. You'll want to download a newer build ISO from Microsoft and upgrade from that. How to Upgrade to Windows 10 Anniversary Update version 1607 using ISO File example upgrade process.