To clear your cache in Microsoft Edge, please follow the steps bellow:
1.) Click the Settings and more icon (The ". . . ")
2.) Click Settings.
3.) Under "Clear Browsing Data," Click "Choose what to clear."
4.) Check the boxes for "Cookies and saved Website Data" and "Cached data and files"
5.) Click the Clear button. The browser will work for a moment, and then the message "All Clear!" will appear at the top when the data has been erased.