"WindowsUpdate_80240020" "WindowsUpdate_dt000"

this tool saved me http://www.microsoft.com/en-us/software-download/windows10

Does not help at all...... my download has failed 42 times since 7/29/15

try adding your current user with admin privileges to the "Distributed COM Users" users group.

1. from the start menu select run and then type "lusrmgr.msc"
2. next go to "Users" and then find you user account name in the right hand pane.
3. open you user account properties by double clicking on the user name
4. go to the "Member of" tab and click add.
5. click the "advanced" button followed by the "find now" button
6. Find your 'Distributed COM Users' in the list and click add.
7. next click ok, on each of the open menus to close them.
8. restart your PC and try the update again.

If you still have issues, try adding "administrator" user to the "Distributed COM Users" group as well.

let me know if this works for you.

This worked for me...

1. Access this file location C:\Windows\SoftwareDistribution\Downloadand delete everything there. (Note delete only content found there and not the Download folder itself)
2. Open CMD (command prompt) with run as administrator (admin privileges) and run this command: wuauclt.exe /updatenow

The Update Window should pop-up with downloading Windows 10 again, and if your lucky it will be the complete kit this time.

Source: http://sccmtips.ro/fix-windowsupdate\_80240020-error-in-windows-10-downloadinstall/

I did this and nothing happens...I use windows 7