Using Windows 11 Everything was working fine a couple days ago. Today, when I went to start a Jupyter Lab session, nothing happened. After typing 'jupyter lab' in the command prompt, the cursor went to the line below, keep blinking, and nothing else... the same happened when I tried to use pip (e.g., 'python -m pip install --upgrade pip'), or jupyter notebook. I tried restarting the computer, and executed the CMD as administrator... same thing! Python, starting from the prompt, is working fine! Can't say if there was a Windows actualization since last time I used jupyter (last week). Continue reading...