If you need to create a new Custom View from a filtered set of Warning and Error events, what should you do?

Creating a new Custom View from a filtered set of Warning and Error events is best accomplished by saving the filter as a new Custom View. When you filter events in a log (such as in Event Viewer), that filter allows you to see only the events that meet specific criteria, in this case, Warning and Error events.

By saving this filtered set as a Custom View, you are essentially creating a tailored view that allows you to quickly access these specific events in the future without having to recreate the filter each time. This not only saves time but also helps maintain consistency in the way you monitor and manage these events.

The option to clear the existing filter would result in losing those specific settings and context you have established for viewing Warning and Error events. Exporting the log to a text file does not help in creating a Custom View; rather, it is a separate function that allows for archiving or transferring log data. Refreshing the view is also not relevant to the creation of a new Custom View, as it simply updates the display of the current events based on existing filters. Thus, saving the filter as a new Custom View is the most effective way to achieve the desired outcome.