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Cannot connect NXV-300


Probably after latest Java update I cannot anymore connect to a NXV-300. Have tried with IE11, Firefox35 and Chrome40. Java is version 8 update 31 (Win7). I have added the ip of the NXV-300 in the Java Control panel to Exception Site List.

This is the error message I get from Java Console:

Java Plug-in
Using JRE version 1.8.0_31-b13 Java HotSpot(TM) Client VM
User home directory = C:\Users\Markku
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
CacheEntry[]: updateAvailable=false,lastModified=Sat Oct 10 03:00:08 EEST 2009,length=61668
SecurityManager restricts session recording.
Connecting to, port 5900...
Error: access denied ("java.net.SocketPermission" "" "connect,resolve")
java.security.AccessControlException: access denied ("java.net.SocketPermission" "" "connect,resolve")
at java.security.AccessControlContext.checkPermission(Unknown Source)
at java.security.AccessController.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at java.lang.SecurityManager.checkConnect(Unknown Source)
at sun.plugin2.applet.SecurityManagerHelper.checkConnectHelper(Unknown Source)
at sun.plugin2.applet.AWTAppletSecurityManager.checkConnect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at RfbProto.<init>(RfbProto.java:229)
at VncViewer.connectAndAuthenticate(VncViewer.java:325)
at VncViewer.run(VncViewer.java:158)
at java.lang.Thread.run(Unknown Source)

Does anyone know how to solve this problem?

Best regards,

Markku Metsovuori
AV-systems Oy


  • Have you tried to use a standard VNC client? Just grab UltraVNC and connect to the IP of the NXV300 direct.

    I gave up on the integrated java clients on any system back in 2006

    edit: Often the NXV300 locks up and stops accepting connections and needs a restart
  • I too vote for the NXV lock up. Power cycle it before you go too crazy trying other things.
  • CybrduckCybrduck Posts: 2
    And the result of power cycling?
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