Use the following information to switch to Windows 10 Pro through the Microsoft Store. Important. While it’s free to switch to Windows 10 Pro. S mode is an evolution of the S SKU introduced with Windows 10 April Update. It’s a configuration that’s available on all Windows Editions. Anything downloaded from the Microsoft Windows Store will run on Windows 10 S, which has thousands of applications available, including free.
 
 

Switch to Windows 10 Pro/Enterprise from S mode – Windows Deployment | Microsoft Docs – Question Info

 
Also find answers to questions about computers with Windows 10 in S mode How does Windows 10 in S mode compare to Windows 10 Home and Windows 10 Pro? Anything downloaded from the Microsoft Windows Store will run on Windows 10 S, which has thousands of applications available, including free. S mode is an evolution of the S SKU introduced with Windows 10 April Update. It’s a configuration that’s available on all Windows Editions.