scrolling does not work after update to Monterey 12.7.1

after I updated tp Monterey 12.7.1 scrolling with the mouse and the trackpad stopped working. I can still go up and down with the arrow buttons. After that the trackpad works for some minutes and then stops working again. I even cannot work in the menus without scrolling. I am working on a iMac and never had an issue. APPLE PLEASE HELP WITH AN UPDATE!!!!!