Tap Internet Explorer 
Tap 
around bottom right
Tap “Settings“
Tap “delete history” 
If you want to delete “saved passwords” tick the box
Now the box is ticked
Tap “delete“
Well done!
How To Delete Webpages Browsing History On Microsoft Phones
Tap Internet Explorer
Tap around bottom right
Tap “Settings“
Tap “delete history”
If you want to delete “saved passwords” tick the box
Now the box is ticked
Tap “delete“
Well done!