How to Fix  

Here's how to fix the error that appears when installing Windows 10 or 11 in VirtualBox. "Windows cannot read the #productkey setting from the unattended answer file."
This is a common error that is occurring in many virtual machines.
There are two actions that must be taken.
They are simple actions: remove some files from the virtual machine's installation directory and also change a setting in the VirtualBox panel.
It's that simple.
Step 1: Download and install VirtualBox.
Step 2: Get the Windows ISO file.
Step 3: Set up a new virtual machine in VirtualBox using the Windows ISO.
Step 4: If you encounter an error, such as "Windows cannot read the ProductKey setting from the unattended answer file", resolve it by unchecking and removing the Floppy boot option in the virtual machine settings.
Step 5: Delete the files that you will see in the video (I demonstrate in Windows and Linux which files and in which folder they are)
I hope that has solved your problem.
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Thanks.
Prof. Claudio Rios.
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