title: Hyperledger Composer: fabric-ca request register failed with errors after machine restart
body: <p>I had a composer-rest-server running on a host. Due to some reason I had to reboot my aws instance. So I stopped all the fabric docker containers except the chaincode and also stopped the composer rest server. </p>
  
  <p>After rebooting the machine, I restarted all the containers. At this time the chaincode container did not start. However, I issued a ping command with admin identity card and the chaincode container too started.</p>
  
  <p>Next, I restarted the composer rest server with the same admin identity. However, when I tried to issue an "identitiy request" command for a participant it resulted in:</p>
  
  <blockquote>
    <p>Unhandled error for request POST /api/system/identities/issue: Error: fabric-ca request register failed with errors [[{"code":20,"message":"Authorization failure"}]]</p>
  </blockquote>
  
  <p>Does it mean the old admin identities are invalidated after a system restart?</p>