Hello, BAD INTENTIONS.
Welcome to Microsoft Community!
I noticed that you are trying to download the Serato DJ app on your newly purchased Surface Pro 11. However you are getting the error “This version of Serato DJ requires a CPU which supports the AVX instruction set”.
The Snapdragon processor in the Surface Pro 11 dictates that the system architecture of the device is Arm, so we need to get the Arm version of the apps we are trying to run or download. If the version of the application is not compatible with the system architecture you will receive this prompt.
To assist in investigating your issue, after searching for information about the Serato DJ app, I noticed that it has not yet been released for Arm. This means that it will not run on the Surface Pro 11.
Apparently this is a compatibility issue triggered by a difference in the hardware model of the CPU. If this has caused you any inconvenience, we support and encourage you to speak with a sales representative and request a refund.
Thank you for your understanding of Surface products.
Finally, please allow me to express my sincere wishes.
Best Regards.
Leo.L - Microsoft Community Support Specialist