title: gsutil Failure: [Errno 1] _ssl.c:504: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed
body: <p>I am getting the below error message while trying to access my google cloud storage from <strong>one of my Google Compute Engine instance</strong> using gsutil command. Below is the command and error message.</p>
  
  <p>Command:</p>
  
  <pre><code>gsutil ls gs://my-storage-bucket
  </code></pre>
  
  <p>Error message:</p>
  
  <pre><code>Your "Oauth 2.0 User Account" credentials are invalid. For more help, see "gsutil help creds", or re-run the gsutil config command (see "gsutil help config").
  Failure: [Errno 1] _ssl.c:504: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed.
  </code></pre>
  
  <p>I also tried authenticating the SDK using <code>gcloud auth login</code> and <code>gsutil config</code> and was also able to generate authorization code from the link generated after running the command <code>gsutil config</code>. The command again exited with the same error message. I did not get any solution even after searching for hours. The command was working fine few days before and it is not throwing any error in my local machine and other instances. Please help me out.</p>