Sandbox security infringement

[GoogleCodeExporter]

If you have just updated phpVirtualBox, don't forget to clear your
browser's cache!!!

Please see the Common Errors and Issues wiki page located at
http://code.google.com/p/phpvirtualbox/wiki/CommonErrors before posting
here.

What steps will reproduce the problem?
1. Installed phpVirtualbox correctly
2. Installed virtualbox extension pack
3. Use port 18083 for display server from virtualbox

What is the expected output? What do you see instead?
Disconnect reason: E: TCP: SECURITY_ERROR Error #2048: Sandbox 安全性違規 
(Security infringement)

The preview is okay, when I connect thru the console
say 127.0.0.1:18083, I get these in the console

What version of phpVirtualBox, VirtualBox, and PHP are you using? On what
operating system?
php - 5.3.13
vbox - 4.2.10
phpvirtualbox - 4.2.4

Please provide any additional information below.

Original issue reported on code.google.com by lucky745...@gmail.com on 20 Apr 2013 at 10:15

[GoogleCodeExporter]

Please open a new issue if you are still seeing this problem.

Original comment by imooreya...@gmail.com on 11 Jul 2013 at 4:34

• Changed state: WontFix

[GoogleCodeExporter]

This issue can be caused by a failure in DNS resolution. I had inadvertently 
added an external DNS server to my DHCP script when fault finding a problem. I 
had been connecting to Vbox (and the client) using RDP using a fully qualified 
domain name however the name does not exist in the real world. The error showed 
up on Vbox, the RDP client refused to connect with a similar error. Pinging the 
IP sometimes worked sometimes not obviously depending on which DNS server was 
being used to resolve the IP. I removed the external DNS server from DHCP, 
restarted networking and all worked fine.   

Original comment by boffintheibm@gmail.com on 21 Nov 2013 at 11:18