Clearing the browser cache (deleting temporary Internet files) is a good way to start the browser with a clean slate. Please note that the steps are different depending on which browser you're using.

Internet Explorerhttp://windows.microsoft.com/en-in/internet-explorer/manage-delete-browsing-history-internet-explorer#ie=ie-11

Firefoxhttps://support.mozilla.org/en-US/kb/how-clear-firefox-cache

Google Chromehttps://support.google.com/chrome/answer/2392709?hl=en​

Safari:  https://support.apple.com/kb/PH19215?locale=en_US

Safari (for iPad/iPhone):  https://support.apple.com/en-us/HT201265

QuickBooks Windows App (for QBO users): For information to clear cache in the Windows App, see QuickBooks Windows app - General Support. 1038