Most browsers have a private browsing or incognito mode to allow you to avoid clearing your browser cache but still start with a clean browsing history.  Private or incognito mode can help to diagnose technical issues by bypassing any stored credentials or pages. 

In Edge this is called InPrivate window.  To open an InPrivate window in Edge:

1. Open the Edge Menu in the upper-right-hand corner of the browser window
2. Select New InPrivate window.