Hide NTFS compression blue double arrow icon overlay
Given the empty.ico file, a fully transparent icon you've put `%SystemRoot%\system32. Add this registry settings:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Icons]
"179"="empty.ico,0"
Restart explorer.exe from the task manager, and you're done. Blue arrows are gone.
Helper script and explanation: http://nerdshack.info/windows-10-and-double-arrow-icon-of-death/