merkel,
in addition to what Andre mentioned
8020000D BG_E_DESTINATION_LOCKED
some other program like chkdsk is currently running which locked the disk and so BITS is not able to write to the disk.
if the issue is not being caused by a scheduled check disk, then "something" else is locking the disk or preventing BITS from writing to the download location.
that "something" could be security software [antivirus/3rd party firewall/etc], malware, or the hard drive may have issues.
Reboot
open the services console. *Right* click computer either on the desktop or start menu and choose 'Manage'; allow the user prompt; open services and applications; then services.
click on background intelligent transfer service and see if you are able to start it.
Reboot
Then try to update again.
Please let us know what fixes the problem or if the problem remains