Which is correct, ie9 emulation or VM VirtualBox ie9?

Question

I want support with internet explorer 9.

I am developing (devtool emulation internet explorer 11) ie9 using Win7.

However, the style is broken in IE9 of Win7 running on VM VirtualBox.

Which is correct, ie9 emulation or VM VirtualBox ie9?

THANKS.

====================
[development]
model: think pad
OS: Windows7
browser: ie11 (devtool emulation select ie9)

[Verification machine]
model: dell
OS: Windows10

[Verification machine mount OS]
VM VirtualBox
OS: Win7
browser: ie9

Answer 1

Hi @幸平 岸上 ,

I suggest you ask the experts in the dedicated forums over here:

Virtual Box
https://forums.virtualbox.org

Internet Explorer
https://social.technet.microsoft.com/Forums/en-us/home?category=internetexplorer

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Best regards,
Leon