Failed to install Windows 10 pro from windows 7 ultimate sp1 RRS feed

  • Question

  • on 7/29/2015 came out windows 10 and my windows try to install it but it failed and it show me this 

    Upgrade to Windows 10 Pro

    Installation date: 7/29/2015 12:14 AM

    You may need to restart your computer for this to take effects

    Installation: Failed

    Error details: Code 80240020 

    Update type: Important

    Install next version of Windows.
    Tuesday, July 28, 2015 9:42 PM

All replies

  • Just wanted to say, got the same issue on an Intel NUC i3, windows 8.1 pro

    have another machine that updated fine, impressed with how smooth the upgrade process is on the working one!

    Wednesday, July 29, 2015 10:33 AM
  • Same as above except the error received was 80240031

    No way to "try again" to install update
    We did Scannow /sfc  ... no error found

    Wednesday, July 29, 2015 1:58 PM
  • I have the same issue. At the end of installation I saw a warning indicating win 7 is being restored. All files had downloaded, installation went smoothly till win 7 login page showed up again after restoring.

    The error is C1900101-30017

    Please help.

    Update: The issue was resolved up on 2nd re-install.
    • Edited by Ali Lotfi Wednesday, July 29, 2015 9:50 PM
    Wednesday, July 29, 2015 5:10 PM
  • Try to use the Windows Update Troubleshooter, looks like it worked for me (too soon to tell, but it's moving forward).

    Edit: Pointless.

    • Edited by Spilvens Wednesday, July 29, 2015 7:31 PM
    Wednesday, July 29, 2015 5:53 PM