title: jupyter notebook is not launching
body: <p>i have installed anaconda on my win 10 machine but jupyter notebook is not launching neither from <code>Anaconda Prompt</code> or <code>Anaconda Navigator</code></p>
  
  <p>when i execute <code>jupyter notebook</code> there is no output in Anaconda Prompt</p>
  
  <p><a href="https://i.stack.imgur.com/tdt0O.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tdt0O.png" alt="enter image description here"></a></p>
  
  <p>and </p>
  
  <p>when i click on jupyter notebook launch button in the Navigator it says <code>launching notebook</code> but nothing happen after that</p>
  
  <p><code>conda info</code> : </p>
  
  <pre><code> active environment : base
      active env location : C:\Users\Zoubi\Anaconda3
              shell level : 1
         user config file : C:\Users\Zoubi\.condarc
   populated config files : C:\Users\Zoubi\.condarc
            conda version : 4.6.11
      conda-build version : 3.17.8
           python version : 3.7.3.final.0
         base environment : C:\Users\Zoubi\Anaconda3  (writable)
             channel URLs : https://repo.anaconda.com/pkgs/main/win-64
                            https://repo.anaconda.com/pkgs/main/noarch
                            https://repo.anaconda.com/pkgs/free/win-64
                            https://repo.anaconda.com/pkgs/free/noarch
                            https://repo.anaconda.com/pkgs/r/win-64
                            https://repo.anaconda.com/pkgs/r/noarch
                            https://repo.anaconda.com/pkgs/msys2/win-64
                            https://repo.anaconda.com/pkgs/msys2/noarch
            package cache : C:\Users\Zoubi\Anaconda3\pkgs
                            C:\Users\Zoubi\.conda\pkgs
                            C:\Users\Zoubi\AppData\Local\conda\conda\pkgs
         envs directories : C:\Users\Zoubi\Anaconda3\envs
                            C:\Users\Zoubi\.conda\envs
                            C:\Users\Zoubi\AppData\Local\conda\conda\envs
                 platform : win-64
               user-agent : conda/4.6.11 requests/2.21.0 CPython/3.7.3 Windows/10 Windows/10.0.17133
            administrator : False
               netrc file : None
             offline mode : False
  </code></pre>
  
  <p><code>jupyter kernelspec list</code> : </p>
  
  <pre><code>Available kernels:
    python3    C:\Users\Zoubi\Anaconda3\share\jupyter\kernels\python3
  </code></pre>
  
  <p>Any Help :)</p>