try to fix PermissionError: [WinError 5] Access is denied

[catafest]

Describe the bug A clear and concise description of what the bug is.

Python: Traceback (most recent call last): File "C:\Users\catafest\AppData\Roaming\Blender Foundation\Blender\4.0\scripts\addons\cascadeur_bridge\operators\csc_ops.py", line 21, in execute CascadeurHandler().start_cascadeur() File "C:\Users\catafest\AppData\Roaming\Blender Foundation\Blender\4.0\scripts\addons\cascadeur_bridge\utils\csc_handling.py", line 55, in start_cascadeur subprocess.Popen([csc_path]) File "C:\blender-4.0.0-alpha+main.3f90bb6a48d2-windows.amd64-release\4.0\python\lib\subprocess.py", line 971, in init self._execute_child(args, executable, preexec_fn, close_fds, File "C:\blender-4.0.0-alpha+main.3f90bb6a48d2-windows.amd64-release\4.0\python\lib\subprocess.py", line 1456, in _execute_child hp, ht, pid, tid = _winapi.CreateProcess(executable, args, PermissionError: [WinError 5] Access is denied

Steps to reproduce the behavior:

1. I follow the steps from your video, and when I press the Cascadeur button I got the error.
2. the cascadeur is installed in AppData\Local\Cascadeur https://www.youtube.com/watch?v=0muo9EPIPSE

Environment:

• OS: [e.g. Windows] Windows 10
• Blender version: [e.g. 3.5.0] 4.0.0-alpha+main.3f90bb6a48d2-windows.amd64-release
• Cascadeur version [e.g. 2023.1] 2023.1.1

Additional context Add any other context about the problem here.

I think the access folder can be fixed with :

import os
import stat
import shutil

def change_folder_permissions(folder_path):
    try:
        # Get current permissions
        current_permissions = os.stat(folder_path).st_mode

        # Set new permissions (Full control for the current user)
        new_permissions = current_permissions | stat.S_IREAD | stat.S_IWRITE | stat.S_IEXEC

        # Apply new permissions
        os.chmod(folder_path, new_permissions)
        print(f"Folder permissions for '{folder_path}' have been changed.")
    except OSError as e:
        print(f"Failed to change permissions: {e}")

[arcsikex]

Thank you for the report and the possible solution. Can you maybe share what were the original permissions set for the Cascadeur folder?

[catafest]

Ok, I think I understand where can be an issue, these are my permissions for a default install Cascadeur folder ... I'm not very good with Windows management issues, any idea?

\AppData\Local>icacls Cascadeur
Cascadeur NT AUTHORITY\SYSTEM:(I)(OI)(CI)(F)
          BUILTIN\Administrators:(I)(OI)(CI)(F)
          DESKTOP-L6HH19G\catafest:(I)(OI)(CI)(F)

Successfully processed 1 files; Failed processing 0 files

[catafest]

Thank you for your help ... a good idea to have this addon.

I try to fix permissions for both Cascadeur and Blender 3D with this command and not work and I try both normal user and admin ... from the command prompt. icacls "C:\path\to\Cascadeur" /grant MYUSER:(OI)(CI)F Maybe the Blender cannot run this: hp, ht, pid, tid = _winapi.CreateProcess(executable, args, PermissionError: [WinError 5] Access is denied

I need to open an issue on the Blender 3D software but I'm not the owner of this project. The Blender team found a similar issue on this.

Also, I cannot close this issue with this comment ...

[arcsikex]

@catafest sorry I am also not familiar with permissions management. Although I noticed that I also get PermissionError WinError 5 if the cascader.exe path is incorrect. So unfortunately based on the error it's not clear if it's actually a PermissionError or user error. And I'm also not very confident messing with user permission with the addon 😄 I will close the issue, I hope you can find a solution