Create Environment Python-3.5 Errors

Question

I just installed Anaconda (that installs Python 3.6) within Windows 10...and it worked fine. I then tried to create a Python 3.5 environment:

% conda create -n py35 python=3.5 anaconda

But the process fails on verification. I've tried twice...and the verification lists 702 errors as below... Here are the top three (I've substituted 'UserName' for my user name):

CondaVerificationError: The package for pyqt located at C:\Users\

<UserName>\AppData\Local\Continuum\anaconda3\pkgs\pyqt-5.6.0-py35hd46907b_5
appears to be corrupted. The path 'Lib/site-packages/PyQt5/Enginio.pyd'
specified in the package manifest cannot be found.

CondaVerificationError: The package for pyqt located at C:\Users\<UserName>\AppData\Local\Continuum\anaconda3\pkgs\pyqt-5.6.0-py35hd46907b_5
appears to be corrupted. The path 'Lib/site-packages/PyQt5/Enginio.pyi'
specified in the package manifest cannot be found.

CondaVerificationError: The package for pyqt located at C:\Users\<UserName>\AppData\Local\Continuum\anaconda3\pkgs\pyqt-5.6.0-py35hd46907b_5
appears to be corrupted. The path 'Lib/site-packages/PyQt5/QAxContainer.pyd'
specified in the package manifest cannot be found.

This should be straightforward: install an environment, within Windows 10... Yet it fails... is there a step I've missed? path variable unset?

Answer 1

Just another alternative to the previous answer:

conda clean --all

This removes index caches, lock files, unused cache packages, and tarballs.

Answer 2

have same issue. And helped with this link. conda clean --packages --tarballs