If you have already downloaded such a file:
If you need a tiny, free, Office-compatible suite: microsoft office 2021 highly compressed 10mb
You run the 10MB file. Nothing seems to happen for a minute. Then, suddenly, your browser opens to a casino site, your default search engine changes to “SecureSearch,” and five new toolbars appear in your browser. The 10MB “installer” was actually a script that injects adware into your registry. You get no Office, only frustration. If you have already downloaded such a file: