title: jupyter notebook not executing codes
body: <p>I starting learning python recently and so far no problem. Yesterday, the jupyter notebook stopped executing code. I have searched online,restarted the kernel, restarted my windows machine and tried to find a way to understand what it is doing so that I can continue, but I have not found a the solution or the reason that my code is not being executed anymore. I am running my code on a windows machine,chrome on windows. I did not intall the jupyter on my machine. I running it off the azure network.</p>
  
  <p>Please help.</p>
  
  <p>Thanks,
  David</p>