I'm using poetry inside a conda environment on Windows. Although I'm working in an elevated shell (admin rights), I keep getting access denied on packages which involve .dll, such as tensorflow or scipy. conda create --name test python=3.7 conda activate test pip install poetry poetry add "tensorflow=1.5.1" scipy pandas poetry install poetry add "tensorflow=1.4.1" poetry install Will return me ERROR: Could not install packages due to an EnvironmentError: [WinError 5] Access is denied: Continue reading...