USD Publishing from Maya - Integration failiure

Hi Everyone
A member of our team is not being able to publish in Ayon, getting the following error every time.
We can confirm the file is generated in the temp directory, but apparently cannot be copied to the new location during integration.

  • Origin folder is succesfully created, and usd file is created
  • The destination folder is succesfully created
  • We tried deactivating the AntiVirus, no luck.
  • Copying the file manually works as expected.

The error in portuguese “O sistema não pode encontrar o caminho especificado” translates to “The system cannot find the path specified”

Uninstalling Ayon, deleting related folders, reinstalling Ayon, turning off AV, testing publishing other props - nothing helped.
Other users have never had the same problem.
Any clue of what we could do for further investigation?

Here’s what we think is the relevant piece from the json, formatted for clarity.

{
    "type": "error",
    "is_validation_error": false,
    "msg": "[WinError -2147024893] O sistema não pode encontrar o caminho especificado",
    "filename": "_ctypes/callproc.c",
    "lineno": "1000",
    "func": "GetResult",
    "traceback": "Traceback (most recent call last):\n" +
                 "  File \"C:\\Users\\USER\\AppData\\Local\\Ynput\\AYON\\dependency_packages\\ayon_2507141453_windows.zip\\dependencies\\pyblish\\plugin.py\", line 528, in __explicit_process\n" +
                 "    runner(*args)\n" +
                 "  File \"C:\\Users\\USER\\AppData\\Local\\Ynput\\AYON\\addons\\core_1.4.1\\ayon_core\\plugins\\publish\\integrate.py\", line 170, in process\n" +
                 "    raise exc\n" +
                 "  File \"C:\\Users\\USER\\AppData\\Local\\Ynput\\AYON\\addons\\core_1.4.1\\ayon_core\\plugins\\publish\\integrate.py\", line 158, in process\n" +
                 "    self.register(instance, file_transactions, filtered_repres)\n" +
                 "  File \"C:\\Users\\USER\\AppData\\Local\\Ynput\\AYON\\addons\\core_1.4.1\\ayon_core\\plugins\\publish\\integrate.py\", line 290, in register\n" +
                 "    file_transactions.process()\n" +
                 "  File \"C:\\Users\\USER\\AppData\\Local\\Ynput\\AYON\\addons\\core_1.4.1\\ayon_core\\lib\\file_transaction.py\", line 124, in process\n" +
                 "    wait_for_future_errors(\n" +
                 "  File \"C:\\Users\\USER\\AppData\\Local\\Ynput\\AYON\\addons\\core_1.4.1\\ayon_core\\lib\\file_transaction.py\", line 266, in wait_for_future_errors\n" +
                 "    raise exceptions[-1]\n" +
                 "  File \"C:\\Program Files\\Autodesk\\Maya2025\\Python\\Lib\\concurrent\\futures\\thread.py\", line 58, in run\n" +
                 "    result = self.fn(*self.args, **self.kwargs)\n" +
                 "             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
                 "  File \"C:\\Users\\USER\\AppData\\Local\\Ynput\\AYON\\addons\\core_1.4.1\\ayon_core\\lib\\file_transaction.py\", line 150, in _transfer_file\n" +
                 "    copyfile(src, dst)\n" +
                 "  File \"C:\\Users\\USER\\AppData\\Local\\Ynput\\AYON\\dependency_packages\\ayon_2507141453_windows.zip\\dependencies\\speedcopy\\__init__.py\", line 332, in copyfile\n" +
                 "    ret = COPYFILE('\\\\\\\\?\\\\' + source_file,\n" +
                 "          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n" +
                 "  File \"_ctypes/callproc.c\", line 1000, in GetResult\n" +
                 "FileNotFoundError: [WinError -2147024893] O sistema não pode encontrar o caminho especificado",
    "instance_id": "898b95d8-6220-4fed-8002-4f2576161188"
}

Thanks for the help!