title: Cannot login to Oracle Enterprise Manager Express
body: <p>I have downloaded Oracle Developer Days Database 12c virtualbox image. I can boot it and access the desktop. When I try to log in to Enterprise Manager (EM) Express using the URL <a href="http://127.0.0.1:8888/em" rel="nofollow noreferrer">http://127.0.0.1:8888/em</a> I am asked to install Adobe Flash. I install it and get to the login screen.</p>
  
  <p>If I try to login as SYSTEM I get the following error:</p>
  
  <p><a href="https://i.stack.imgur.com/itrdD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/itrdD.png" alt="enter image description here"></a></p>
  
  <p>But when I try to log in as user SYS I get a strange error: Security token does not match. You must login again..</p>
  
  <p><a href="https://i.stack.imgur.com/xFVca.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xFVca.png" alt="enter image description here"></a></p>
  
  <p>To me it looks like the credentials for SYS are OK, but there is something wrong with the user in the database. Is this correct and if so how can I fix it? Or is EM Express just not setup on the image?</p>