Brian has a Dell PC and after the recent Windows update, he had to reinstall all of his apps. Leo says that's unusual behavior, and it usually comes after a feature update, not a security update. That's why Leo recommends only doing critical security updates, not the optional ones. And it's shenanigans like this that Leo tends to avoid using Windows in favor of Linux. But updating Windows while still using it is a very tricky thing. It's like pulling a table cloth out from under the dishes while eating dinner. Sometimes, it just doesn't work right for a small percentage of people. And Brian is one of those who got affected by it.