After a recent migration of everything from an old PC to a new one, the Firefox logo does not appear in any of the HTML file icons on my new computer. They are all blank. It apparently a problem unique to Firefox, and only involves the display of the Firefox logo. Although the icon is blank, when it is clicked, the document is opened by Firefox. If I right-click on a blank HTML document icon and select "Properties", to the right of "Opens with:" is the Firefox logo. If I then click "OK", the Firefox logo remains in the "Properties" window, but the icon remains blank. If I click on "Change", select "Microsoft Edge" and click "OK", the "Microsoft Edge" logo appears to the right of "Opens with:", and the HTML document icon also displays the Microsoft Edge logo. There is a similar result when I select "Google Chrome", "Internet Explorer", or even "Notepad". The corresponding logo appears in the HTML document icons. Any and all suggestions are welcomed.