After a download has fully downloaded and is opening, it opens in a ton of different tabs on my browser. For instance, for classes I am downloading powerpoints and instead of opening up in the powerpoint it instead attempts to open in a browser, which I then have to exit out of and manually choose to open in a powerpoint. At one point in time there was an option to "open all programs this way" and the box was unchecked and after checking I began to have this problem. How do I return to the downloads opening up in the designated programs?

Thanks