Hi, thank you for reaching out to the Microsoft Q&A forum. I’m happy to help.
Microsoft rebuilt the Windows 11 taskbar with a simplified, modern design, which removed support for moving it to the top or sides.
Please note that the Microsoft Q&A forum is a user-to-user community, so Microsoft developers may not see your request. In this case, I suggest reposting it in the Microsoft Feedback Hub so they can be notified: