
You can now use Windows 11 with vertical taskbars, though the feat requires use of a third-party app. Stardock just rolled out an update to Start11 that brings support for vertical taskbars. Following the update, you can place the taskbar on the left or right side of your screen. Clicking on the Start icon will summon a Start menu that fits alongside the vertical taskbar.
Stardock noted in its blog post about the update that vertical taskbars were a highly requested feature. I'm sure that Stardock has received direct feedback on the topic, but I don't have access to those figures. Based on the fact that over 55,000 people viewed a single Microsoft community post about vertical taskbars on Windows 11 and that many have gone to Reddit to request the feature, I think it's safe to say many people want vertical taskbars on Windows 11.