Fix for the 80240020 error when trying to install Windows 10

[zombola]

What this error means is, your Windows 10 installation folder is unfinished and/or corrupted. Now, how do you fix that? 1. Go into "C:\Windows\SoftwareDistribution\Download" and delete everything in that folder. 2. Now, run the command prompt as an administrator. Type in "wuauclt.exe /updatenow". 3. Go to your Control Panel > Windows Update and your Windows 10 should start re-downloading from scratch, hopefully without flaws this time.

hxxs://www.reddit.com/r/windows/comments/3eyrre/fix_for_the_80240020_error_when_trying_to_install/
If it doesn't work,
try to download it on the microsoft website: hxxp://www.microsoft.com/en-us/software-download/windows10

[Ineedanewusersname]

Was receiving same error messages and what worked for me, after searching, was to open a maintenance window (win7) and do a Fix All, let it run and then reboot. All was good then.