The thread discusses downgrading from Windows 11 to Windows 10 on an Acer device with a factory-installed OS. The second user explains that there is no official downgrade option for pre-installed systems and highlights licensing limitations, noting that OEM licenses may prevent a clean install with Windows 10 unless a retail license is available. They also warn that Windows 10 will reach end of life soon and suggest checking the license type using a specific command. Overall, users learn that downgrading is complicated due to licensing and support considerations.