The "threadedFibers.prm" file is something that can be used to collect a more comprehensive dump file on Windows. To create this file, simply create a blank text file, rename it as "threadedFibers.prm", and place it next to the executable (E.G. 4D.exe, 4D Server.exe, etc.)

However, please note that this file is known to be incompatible with plugins dealing with window management or UI elements and may potentially cause freezing or crashing. If you notice the 4D app experiencing these issues, it would be recommended to remove the "threadedFibers.prm" file to see whether that could be the cause. If the 4D app does not have any plugins and detailed dump files are needed, then using that file should safe.