Block access to licensed channels

Even if you correctly configure the channels into which you download packages to avoid licensed channels (list of licensed channels, check and fix your installation), at the institutional level it may be difficult to ensure everyone is avoiding the Anaconda Inc. license trap.

A radical solution is to ask network administrators to block downloads from Anaconda Inc. licensed channels:

https://repo.anaconda.com/pkgs/main/
https://conda.anaconda.org/main/ 
https://conda.anaconda.org/anaconda/ 
https://repo.anaconda.com/pkgs/r/
https://conda.anaconda.org/r/
https://repo.anaconda.com/pkgs/msys2/
https://conda.anaconda.org/msys2/
https://repo.anaconda.com/pkgs/free/
https://conda.anaconda.org/free/
https://repo.anaconda.com/pkgs/archive/
https://repo.anaconda.com/pkgs/pro/
https://conda.anaconda.org/anaconda-extras/
https://repo.anaconda.com/pkgs/mro
https://repo.anaconda.com/mro-archive

More information here and here.

Warning

You might be tempted to block the address https://conda.anaconda.org directly, but this is a bad idea. Indeed, packages form community channels free and open-source like conda-forge and bioconda are also hosted there (https://conda.anaconda.org/conda-forge, https://conda.anaconda.org/bioconda). At the time beeing, no other ressource host to download these packages is available.