Generally, you don’t need to do anything as the security software will clean the infection for you.
If unwanted software has been found on your PC you may be asked to choose what to do next. When this happens you will see a message in the bottom corner of your screen, where you can choose to click Clean computer or Show details.
If you choose Clean computer the file is removed.
The Show details button lets you choose to either remove, quarantine, or allow the file.
Every threat is given an alert level to help you decide what to do.