title: Remote Access to VirtualBox with Remote Display enabled: Multiple issues with Windows remote desktop client
body: <p><strong>* Issue #1 *</strong></p>
  
  <p>I have configured an external simple authentication in VirtualBox. KRDC (rdesktop) is able to connect to the guest OS without a problem with configured user/password. However I cannot connect from neither Win XP remote desktop client nor Win7 remote dektop client. Connection seems to be established but on the Windows side I'm getting an errors saying:</p>
  
  <p>"Your Remote Desktop session has ended. Your network administrator might have ended the connection. Try connection again, or contact technical support for assistance". </p>
  
  <p>The other message is saying "This computer might be low on virtual memory. Close your other programs, and then try connecting to  the remote computer again. If the problem continues...."</p>
  
  <p>A second message doesn't make any sense. The source system has no running processes and has 2Gb of RAM and 2Gb of virtual.</p>
  
  <p>VirtualBox log file at the same time contains this:</p>
  
  <pre><code>01:08:15.066 VRDP: New connection:
  01:08:15.066 VRDP: Negotiating security method with the client.
  01:08:15.102 VRDP: Methods 0x0000001b
  01:08:15.103 VRDP: Channel: [rdpdr] [1004]. Accepted.
  01:08:15.103 VRDP: Channel: [rdpsnd] [1005]. Accepted.
  01:08:15.103 VRDP: Channel: [drdynvc] [1006]. Accepted.
  01:08:15.103 VRDP: Channel: [cliprdr] [1007]. Accepted.
  01:08:15.374 VRDP: Client seems to be MSFT.
  01:08:15.374 VRDP: Logon: --computer_name_here--- (10.0.2.15) build 6001. User: [] Domain: [] Screen: 0
  01:08:15.374 AUTH: User: []. Domain: []. Authentication type: [External]
  01:08:15.375 AUTH: external authentication module returned 'access denied'
  01:08:15.375 AUTH: Access denied.
  01:08:15.375 VRDP: Connection closed:
  01:08:15.375 VRDP: Logoff: --computer_name_here--- (10.0.2.15) build 6001. User: [] Domain: [] Reason 0x0001.
  </code></pre>
  
  <p>Any ideas how to make it work?</p>
  
  <p>Note1: it is working when authentication is disabled. However this is not acceptable.
  Note2: Same error message appears even when I login as one of the configured on VirtualBox side users and provided a user name in advanced settings for remote desktop connection.</p>
  
  <p><strong>* Issue #2 *</strong></p>
  
  <p>Even Windows remote desktop client get connected to the Remote display provided by VirtualBox a screen doesn't update at all. I need to minimize/maximize to see what is on the screen at the moment.</p>
  
  <p>Any ideas how configure windows client to avoid this problem?</p>