RealPlayer is great, but are there preference settings for security and can it perform self-diagnostics?
The software doesn't have a section to manage Security Settings, but since it works with Internet Explorer, you can adjust the security settings in Internet Options and it will reflect the behavior of RealPlayer as well.
You can use the available topics on the following page to learn more about customizing RealPlayer application: https://customer.real.com/hc/en-us/categories/200569078-Getting-Started
