title: InvalidArchiveError when executing conda install notebook
body: <p>I have conda 4.8.1 running on windows 10 enterprise edition and it is showing me following error whenever I try to install notebook.</p>
  
  <p><code>InvalidArchiveError("Error with archive D:\\Miniconda3\\pkgs\\notebook-6.0.2-py37_0ujelie94\\pkg-notebook-6.0.2-py37_0.tar.zst.  You probably need to delete and re-download or re-create this file.  Message from libarchive was:\n\nCan't create '\\\\?\\D:\\Miniconda3\\pkgs\\notebook-6.0.2-py37_0\\Lib\\site-packages\\notebook\\static\\components\\MathJax\\extensions\\a11y\\invalid_keypress.mp3'")</code></p>
  
  <p>I have tried different versions of notebook and reinstalled anaconda and miniconda many times. Nothing seems to work.</p>