Steps to Clear Cache and Cookies in Microsoft Edge Web Browser 

1. Open Microsoft Edge, select Menu (3 dots icon on top right corner of the browser) > Settings > Privacy, search, and services.

2. Under the "Privacy, search, and services" section, select "Clear browsing data" button.

3. Under Time range, select the drop-down menu and choose the duration for as far back as you would like to clear the cache and cookies.

4. Select "Cached images and files" and "Cookies and other site data" check box and then select Clear now.

Microsoft Support for clearing cache and cookies