Associated Applications Viewer Icon

Hi all-

New administrator with a question regarding how to customize the associated applications viewer icon.  

CM10.1

Windows 11

I have a user that reports the icon for Publisher (PUB) is using a generic icon vs the MS icon associated with the product.  I have confirmed that toggling to the associated application in the viewer customization does not change the icon.  Is there a "trick" to change the icon or a way to update the icon from the generic paper with paperclip icon.