3

I am trying to install/upgrade Windows Pro 8.1 to Windows 10 through setup.exe from C:\$Windows.~BT. But installer tell me that boot.wim file is missing.

In update history logs I can see that update to windows 10 failed many times since july 29th.

enter image description here enter image description here enter image description here enter image description here

Improve this question
0

1 Answer 1

Reset to default
3

I had the exact same error while I wanted to upgrade from Windows 8.1 to Windows 10. My solution was the following:

  1. Log in as an administrator.
  2. Press Windows+R, enter regedit and press enter to open the registry editor.
  3. Locate the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\OSUpgrade (if it's missing, create it)
  4. Create a new DWORD (32-bit) value, call it AllowOSUpgrade and set its value to 0x00000001.
  5. Restart the control panel, browse to "Windows Update" and search for updates (if the button from step 6 is not already there).
  6. Now, a button with Getting started should appear. Click on it and follow the instructions to install Windows 10.

Source: http://answers.microsoft.com/en-us/windows/forum/windows_10-windows_install/windows-update-installation-failure-80240020/d695e827-9774-4e10-8972-df8d51a7bb51

Improve this answer
1
  • Didn't work for me because that registry already has that value (0x00000001).
    – GreenGiant
    Jun 20, 2016 at 18:50

Not the answer you're looking for? Browse other questions tagged .