How to uninstall cubase pro 11 on windows

how to uninstall cubase pro 11 on windows ?

If you uninstall from Windows settings, your prefs will remain unless you delete them. (%AppData% Steinberg/Your_Cubase_version).

Have you tried using the standard Windows Uninstall feature? It’s always worked just fine for me in the past.
If you wish to delete the preferences too you will have to do that manually as stated above.