title: Error in installing Flask using pip command in windows
body: <p>I tried to install Flask as well as <em>virtualenv</em> using pip command in windows command prompt but below error is showing. How can I fix this?</p>
  
  <pre><code>C:\Users\anupa&gt;pip install Flask
  Collecting Flask
  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('&lt;pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x06620E50&gt;: Failed to establish a new connection: [WinError 10061] No connection could be made because the target machine actively refused it',))': /simple/flask/
  
    Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('&lt;pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x06620DF0&gt;: Failed to establish a new connection: [WinError 10061] No connection could be made because the target machine actively refused it',))': /simple/flask/
  
    Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('&lt;pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x06620C30&gt;: Failed to establish a new connection: [WinError 10061] No connection could be made because the target machine actively refused it',))': /simple/flask/
  
    Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('&lt;pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x06620E10&gt;: Failed to establish a new connection: [WinError 10061] No connection could be made because the target machine actively refused it',))': /simple/flask/
  
    Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ProxyError('Cannot connect to proxy.', NewConnectionError('&lt;pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x06620C90&gt;: Failed to establish a new connection: [WinError 10061] No connection could be made because the target machine actively refused it',))': /simple/flask/
  
    Could not find a version that satisfies the requirement Flask (from versions: )
  No matching distribution found for Flask
  </code></pre>