NoVNC: Server disconnected (code: 1006)

[fraksken]

Recently I noticed I couldn't use novnc anymore.
In the Proxmox gui, the task log shows:

nc6: connection timed out
TASK ERROR: command '/bin/nc6 -l -p 5901 -w 10 -e '/usr/sbin/qm vncproxy 105 2>/dev/null'' failed: exit code 1​

When trying to run the command from console, I get this:

/bin/nc6 -l -p 5901 -w 10 -e '/usr/sbin/qm vncproxy 1116 2'
nc6: connection timed out​

My workstation is an iMac 10.10.5 OSX Yosmite.
On my workstation I have

java -version
java version "1.8.0_65"
Java(TM) SE Runtime Environment (build 1.8.0_65-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.65-b01, mixed mode)​

I am using Safari 9.0.3 to open Proxmox.

The Host machine is
Intel Xeon E5 1650 6c / 12t @3.1 GHz+
Ram: 64 GB
HDD: 2x 3 TB SATA Soft raid1

I notice NOT having this problem on my fedora desktop.

How can I troubleshoot this issue and solve it?

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Worth mentioning: I have this problem for multiple servers. I understand the issue is with my desktop machine.
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This has become a lot less urgent. I am replacing Safari with Opera. Opera does not seem to have this problem.
I'm not using firefox because of ram issues and because it's always complaining about ssl certificates.

 

[wolfgang]

Hi,

Try to flush your browser cache on the Mac.