none of this works it only changes EXE format, you can still get the default icon to work by simply deleting your *\Build\Windows\Application.ico file.
The default “U” unreal icon will work flawlessly in all categories.
The REAL problem is the unreal devs being lazy icky words (like always).
They have NEVER in any documentation told us HOW to format our icons. Lazy elitist gatekeeping.
If anyone has the ABSOLUTE CORRECT WORKING DIMENSIONS FOR NOT ONLY THE STUPID WINDOWS ICON BUT ALSO THE TASKBAR AND TITLE BAR ICONS could you please post them.