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I'm running OS X El Capitan 10.11.1 on an early 2015 13-inch Retina MacBook Pro (MacBookPro12,1) with Boot Camp Assistant 6.0.0 (519).

I have downloaded Win10_EnglishInternational_x64.iso from Microsoft.

When I select this ISO and click Install in Boot Camp Assistent I am presented with the message below and I'm not able to continue.

Need 64-bit Windows 8 or later ISO file.

Boot Camp only supports 64-bit Windows 8 or later installation on this platform. Please use an ISO file for 64-bit Windows 8 or later installation.

What do I need to do/change/download for Boot Camp Assistant to accept Microsoft's official Windows 10 ISO as a valid "64-bit Windows 8 or later ISO file"

I also tried en_windows_10_multiple_editions_x64_dvd_6846432.iso that I can download from MSDN as a subscriber. This ISO file is also not accepted by Boot Camp Assistant.

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  • I don't have the cred to be able to answer on here, but you're likely using Chrome to download the ISO. It has issues. Download the iso with Safari and it will work.
    – smashedtoatoms
    Commented May 22, 2016 at 16:20

2 Answers 2

Reset to default
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I think because you download an iso and mounted it (open it) and that silly error pop out. I just unmount and it's work

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  • 1
    This is the right answer in my case
    – polyclick
    Commented May 8, 2016 at 19:03
  • 1
    you rock man!!!
    – Nabeel Khan
    Commented May 24, 2016 at 1:56
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Boot Camp Assistant accepts Win10_SingleLang_EnglishInternational_x64.iso

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  • To clarify: from the windows download page under Select Edition you have to select the single language version. It will give you this message if you download the generic Windows 10 edition, instead of the Windows 10 Single Language edition.
    – Dan Sandland
    Commented Apr 25, 2016 at 5:57
  • unmounting the disk worked :)
    – Nabeel Khan
    Commented May 24, 2016 at 2:00

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