I’m trying to follow all instructions on installing Python (which I did, version 3.8.6), miniconda (also succeeded), but when I come to installing Jupyter using the command box and the conda install jupyter-command, I get the same error every time:
The two given examples about simply re-trying this or checking whether your network has issues seem like the best options, after that you may have to start searching around for that error in association with conda.
If for some reason you cannot get it to work in the long term then since you already have a Python distribution on your PC you could install Jupyter via pip instead. I’d suggest working within a virtual envrionment- https://docs.python.org/3/library/venv.html if at all possible and after that it should be as simple as pip install jupyter. Note that if you do get conda working and you’d rather use it then make sure to do so and to install all packages again via conda install in a different environment because pip and conda don’t use the same repositories and don’t always play nice together.