How to update your Web browser
Make sure that the latest version of Chrome, Firefox, Safari or Edge is being used.
Out of date browsers can cause a lot of issues, make sure the browser is on the latest version. To update the browser simply restart the browser or computer, the browser automatically updates when it restarts. If still problem persists then take the following steps:
Update your browser
Here are more details on how to update Chrome, Firefox, and Safari.
For a Chromebook, check out this article.
Operating System out-of-date
Sometimes internet browsers stop supporting older versions of operating systems and it is required to update the operating system.