Windows 10 install error 80240020

For those getting a Windows 10 install error 80240020 when trying to install Windows 10, try the following:

  1. Browse to “C:\Windows\SoftwareDistribution\Download”
    • Delete everything in this folder. – This will delete any corrupt files.
  2. Run command prompt as an administrator and type the command “wuauclt.exe /detect now” followed by enter.
  3. Go to your control panel and then Windows update – check for updates and it should start re-re downloading Windows 10.

Failing that, see this Microsoft article:
http://answers.microsoft.com/en-us/insider/wiki/insider_wintp-insider_install/how-to-do-a-custom-installation-of-windows/38adfa8c-32f8-4354-8c53-13b5f2cf7e44

Good luck!