PikeNote
Antivirus Flags TaskbarGroups As a Threat to Office Documents
In this case, I have a taskbar group that launches Microsoft Office apps, and when an app (Excel) I launched from there tries to open a document file that I direct it to, Avast Antivirus believes it is TaskbarGroups trying to change my file and balks.
I suggest setting it as an exception, and reporting it to Avast as a false positive.
That is odd. It shouldn't change or delete anything. Will look into it further if that is still an issue with Avast and protected documents.
The issue is related to ShellLinkObject link = (ShellLinkObject)folderItem.GetLink; when it tries to get the icon for the shortcut. Move the shortcut for your document out to a non-protected area, and it should work. I don't believe there are any bypasses to this or for getting icons that doesn't trigger this feature.