Hello, thank you for reaching out to Microsoft Q&A.
1.
Could you please share the exact screenshot of the error you receive when you click 'Switch out of S mode' on your Windows 11 device?
(Go to Start > Settings > System > Activation > Switch out of S mode)
2.
Also, type 'Winver' in the search bar on the taskbar and click Enter.
Post a screenshot of the resulting dialog box.