Tweaking the User Account Control (UAC) settings. By default, the User Account Control is set to pop-up whenever an app or program attempts to make changes to your computer. If you're not using an administrator account, the UAC will also prompt you to enter an administrator's password before allowing the app/program to make changes.
Only time will tell. In Europe, World War 2 is considered to have begun on September 1, 1939, with the Nazi German invasion of Poland. In 1940 Nazi Germany invaded and occupied most of France. Eventually the Germans occupied most of Europe. In 1941, Hitler abrogated his treaty with Stalin by invading the Soviet Union.
World War II in Europe. There are several possible dates for the start of World War Two in the Pacific, but in Europe, the war is almost universally agreed to have begun with the Nazi invasion of Poland in 1939. Within two years Hitler had subjugated much of the continent, including a lightning conquest of France.