The word "cache" is defined as to "store away or hide for future use" and this is what web browsers do. A browser tends to hold onto information (browser history and cookies), and over time, could cause problems logging in or bringing up websites. This is why we suggest clearing cache as a first step when troubleshooting. Depending on the browser used, please click on the link below for step-by-step instructions on clearing cache:
Clearing Cache in Chrome
Clearing Cache in Safari
Clearing Cache in Firefox
Clearing Cache in Edge