UPDATE: The virus scanner of our IT security department has detected the exported exe file (win64) as a threat. I think that is why WindowsIconUpdater does not work.But it worked with the exported exe file (win32). Was anything changed in the Win64 (NW.js) export so that the virus scanner recognizes it as a threat? Before it worked normally.
Here is the message from the It security department:
Category: Trojan
Classification: Trojan:Win32/Doplik