If you log in to Owl and see this message, this means that the browser version you are currently using isn't one that's officially supported. While we try our best to support all commonly used browsers and browser versions, we don't extend this support to legacy browsers, such as Internet Explorer, or to browsers that haven't been updated for a long time. You'll be more secure browsing the internet using an updated browser, which is why we encourage you to upgrade your browser in these instances.
If you're still using Internet Explorer, consider downloading Google Chrome instead if you're on an older version of Windows - or, if you're using Windows 10, you could use Microsoft Edge instead, which is Microsoft's official replacement for Internet Explorer. Internet Explorer is considered by Microsoft as a legacy browser, used for resolving compatibility issues with old software and websites, which is why we no longer support it.