Windows path length - error when running from exe

[Rotem Rehani]

Hello, 

In my program some files have a long path (>260 characters). I use Windows 10 and enabled NTFS long paths in the system registry with these instructions. My program works well when running python directly from the cmd. On the same machine I create an exe file of my python package using: pyinstaller --onefile my_script.py (No Additional parameters). However, when I run the generated exe of the program on the same machine I get the long paths error again. 

I couldn't find additional parameters to pass to pyinstaller that will capture the required behavior. When printing the system registry values from the python code that the exe file runs I get that long paths are enabled - which seems to be fine.. 

Any ideas? 

Thanks,

Rotem