==== Anaconda Navigator (or Spyder) won't launch (Windows 10) ====

Solutions:

https://docs.anaconda.com/anaconda/navigator/troubleshooting/

==== Solving Environment: failed with initial frozen solve. Retrying with flexible solve ====

**1. upgrade conda**

<code>
conda update -n base conda
</code>

**2. upgrade package**

<code>
conda update --all
</code>