title: Get error when executing Update-Database in Code First EF
body: <p>Im using Entity Framework and Code First. Connections to db works fine until i want to create a new Migration. Keep getting this error:</p>
  
  <pre><code>A transport-level error has occurred when sending the request to the server. (provider: Session Provider, error: 19 - Physical connection is not usable)
  </code></pre>
  
  <p>Normal read and write to the tables works fine.</p>
  
  <p>I can also execute a rollback with line</p>
  
  <pre><code>Update-Database -TargetMigration xxx
  </code></pre>
  
  <p>Only the forward way I gives me trouble</p>