title: Anaconda prompt closes immediately - the system was unable to find the specified registry key or value
body: <p>I'm having an issue with the Anaconda prompt.</p>
  <p>Everything was find until I created a new environment with <a href="https://docs.pymc.io/" rel="noreferrer">PyMC3</a> in it.</p>
  <p>The usual way : <code>conda create -n myenv</code></p>
  <p>and then, after I activated it : <code>conda install -c conda-forge pymc3 </code></p>
  <p>For some reason the packages weren't installed so I deleted the environment.</p>
  <p>Now, I'm getting this error, see picture here :</p>
  <p><a href="https://i.stack.imgur.com/gnr89.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/gnr89.jpg" alt="enter image description here" /></a></p>
  <p>The last &quot;error : error&quot; message translates to : &quot;the system was unable to find the specified registry key or value&quot;.</p>
  <p>Now what's weird is that when I start the application from the navigator instead of the prompt, I can access my envs and launch my notebook or visual code studio from there but for the base environment which doesn't work.</p>
  <p><strong>But</strong> trying to open the prompt closes it immediately, I believe it is accessing &quot;base&quot;, the default env. Also, from the navigator I'm unable to launch a notebook from the &quot;base&quot; env.</p>
  <p>Picture here :</p>
  <p><a href="https://i.stack.imgur.com/kEj85.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/kEj85.jpg" alt="enter image description here" /></a></p>
  <p>Though as I said, other environments are fine.</p>
  <p>Does anyone know how to solve this issue ? I can't access the prompt because of it, I was just lucky enough to grab it and take a screenshot, it closes immediatlely otherwise.</p>
  <p>P.S : I use Windows 10 on a Lenovo laptop, Python 3.7 and never had the issue before today.</p>
  <p>Thanks</p>