Clear Cache and Cookies in Microsoft Edge
  1. Open Microsoft Edge
  2. Select More tools in top right User-added image
  3. Select Settings 
  4. Click the button Choose what to clear under the Clear Browsing Data section
  5. Check the box next to Cookies and saved website data and Cached data and files
  6. Click on the Clear button
  7. Close all instance of Microsoft Edge and then re-open
Please see these articles to clear cache and cookies in other browsers:
Clear Cache and Cookies in Firefox
Clear Cache and Cookies in Chrome