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Windows installation keeps getting cancelled.

Hi everyone, so I’ve been trying to install windows through boot camp on my Intel MacBook Pro 2020 through the regular Bootcamp assistant installation with the latest Windows ISO from the official source and I keep getting the error shown in the picture when I try to go through the process as normal.

After I see this prompt, I click “OK” and the screen goes dark and then becomes dimly lit with a white loading wheel that spins for a second and then disappears. I then have to boot up again manually and press/hold Option to boot into “Macintosh HD” since it keeps trying to boot into “EFI Boot” instead. There’s also another option to boot into called “Windows” but when I try that, it goes through the installation process again and gets stuck at the same area with the same exact prompt and problem again.


I’m not sure what to do about this problem? I’ve already tried to remove the bootcamp partition and reinstall MacOS and then go through the install process again from there but it came back to this same problem again. I don’t have anything plugged into my MacBook except for the charger/power adapter that came with it. I am also on Big Sur 11.4 and the ISO files I’m using is Win10_21H1_English_x64.iso if that makes a difference. I am also giving bootcamp 170 gb of space. My Macintosh HD is formatted in apfs as well, I'm not sure if that makes a difference.


I've also tried to PRAM reset and run first aid on my disks but still did not work and have the same problem. Also, I've tried to use an older version of Windows (20H2) and that did not work either, same problem. Filevault has been turned off too.




Posted on Jul 2, 2021 9:27 PM

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6 replies

Jul 3, 2021 4:55 AM in response to eakyth

EFI Boot is the correct method, but it should not be used manually on your Mac.


Did you also run a SMC Reset and retry the installation? If not, remove the current partition and run the steps in

and re-run BC Assistant.


See

for reference.

Jul 3, 2021 4:04 PM in response to eakyth

So somehow, I got Windows to install.


After trying out all the suggestions I’ve seen online and the suggestion posted here, I tried out an option given by an Apple employee which was to boot up the computer and press “Option + Command + R” and hold that combination.


The computer then went into internet recovery mode and I selected my network and the computer loaded for 10 minutes and went into disk utility.


I restarted my computer afterwards, went through the bootcamp installation process again as normal and the windows installation went through.


I’m still not sure what the problem was but I hope this somehow helps someone out.

Windows installation keeps getting cancelled.

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