I have Dell G3 15 3500.since last one month it was shows windows 11 update available download and install or stay on windows 10 options.I wasn't ready for it now so, i haven't updated it .But Today i got a Feature update to windows 10 21H2 .So, i updated it and after updating it,windows 11 download and install button got disappeared.Tomorrow i was going to update it and now it got disappeared.Someone please tell me how can i get than download and install button back?.I don't want to manually button it.I want to update it with windows update please help me .