I have not upgraded to Windows 11 on my desktop computers, but I have it on my Surface Pro 8, and it is incompatible with some applications. For instance, Fences, which is a desktop organizing software, functions well on both my Windows 10 devices, but I cannot make it work on the Surface, which runs Windows 11. I have reached out to Stardock, the developers of Fences, and they point to Microsoft as the cause. Then I contact Microsoft, and they point to Stardock as the cause. Therefore, I am not upgrading to Windows 11 on my desktop computers.