I can also reproduce this error when i connect to a spice guest which listen type equals none on a remote connection.

package version:
virt-manager-1.4.1-2.el7.noarch
libvirt-3.2.0-3.virtcov.el7.x86_64
qemu-kvm-rhev-2.9.0-1.el7.x86_64

Steps:
Need 2 hosts: HostA and HostB.

1. Prepare a spice guest with listen type equals none on HostA.
# virsh dumpxml esx6.0-rhel6.7-x86_64 --security-info
...
    <graphics type='spice'>
      <listen type='none'/>
    </graphics>
    <video>

2. Launch virt-manager on HostB, File->Add connection->Hypervisor choosing 'QEMU/KVM'->Tick 'Connect to remote host'->Method 'SSH'->Username: root ->Hostname: $host A ->Connect.

3. Open guest console 'esx6.0-rhel6.7-x86_64' on hostA.

Result after step3:
It will fail to open guest window and reports:

"Error connecting to graphical console:
Guest is on a remote host, but is only configured to allow local file
descriptor connections."

(In reply to zhoujunqin from comment #2)
> I can also reproduce this error when i connect to a spice guest which listen
> type equals none on a remote connection.
> 
When listen type=none, graphic can't be opened on remote host, this is expected

(In reply to JinFangge from comment #3)
> (In reply to zhoujunqin from comment #2)
> > I can also reproduce this error when i connect to a spice guest which listen
> > type equals none on a remote connection.
> > 
> When listen type=none, graphic can't be opened on remote host, this is
> expected

Yes, fjin, thanks for pointing out.
So please ignore Comment 2, thanks.

Upstream patch posted:

https://www.redhat.com/archives/virt-tools-list/2017-September/msg00039.html

Upstream commits:

commit ccaef8c16a89ad4ca64b07fd5f6cc6e91de3a15e
Author: Pavel Hrdina <phrdina>
Date:   Wed Sep 6 10:14:35 2017 +0200

    graphics: set default port only for correct listen types

commit fe6c5067c0d1fea786bb5255043a19d25249b65b
Author: Pavel Hrdina <phrdina>
Date:   Wed Sep 6 10:17:43 2017 +0200

    graphics: introduce listens.{type|address|network} parameters

commit d718f1a516757606093207190de6b10a40a47d1c
Author: Pavel Hrdina <phrdina>
Date:   Wed Sep 6 10:26:33 2017 +0200

    graphics: introduce listens.socket parameter

commit f1976155cd1711f5009d38b10bcf4bd511927608
Author: Pavel Hrdina <phrdina>
Date:   Wed Sep 6 09:24:53 2017 +0200

    sshtunnels: use <listen> element to get UNIX socket for graphics

I can reproduce this issue with package:
virt-install-1.4.1-7.el7.noarch
virt-manager-1.4.1-7.el7.noarch
virt-manager-common-1.4.1-7.el7.noarch

Then try to verify this bug with new build:
virt-install-1.4.3-1.el7.noarch
virt-manager-1.4.3-1.el7.noarch
virt-manager-common-1.4.3-1.el7.noarch

Steps:
Need 2 hosts: HostA and HostB.


0. Set spice listen type='socket' to guest on HostA.
# virsh edit rhel7.4
...
    <graphics type='spice'>
      <listen type='socket'/>
    </graphics>
...

1. Start guest
# virsh start rhel7.4
 
# virsh dumpxml rhel7.4
...
    <graphics type='spice'>
      <listen type='socket' socket='/var/lib/libvirt/qemu/domain-30-rhel7.4/spice.sock'/>
    </graphics>
...

2. Launch virt-manager on HostA and open guest window.
# virt-manager

3. Launch virt-manager on HostB and try to open guest window.
File->Add connection->Hypervisor choosing 'QEMU/KVM'->Tick 'Connect to remote host'->Method 'SSH'->Username: root ->Hostname: $HostA ->Connect.

4. Open guest console 'rhel7.4' on HostA.

Result:
After step2, virt-manager can open guest console on HostA.
After step4, virt-manager can also open guest console on remote HostB.

Since we can connect to SPICE graphics on remote host using SSH tunnel, move this bug from ON_QA to VERIFIED, thanks.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2018:0726

You can check the error log for your guest spice from the VM and see what the error is. If it's something like "Virt-manager cannot connect to guest spice unix socket", then it's likely that the port is closed or not running. You can run: sudo ifconfig | grep "lo" to get a list of all open ports. Make sure you're using virt-manager on a different host than your guest machine. If so, close all other programs and use only this command (and don't forget to replace <HTTPSERVER> by your actual hostname). Well, now I would like to visit https://casinosanalyzer.com/casino-bonuses/grandevegascasino.com website in order to read things about Grande Vegas Casino Bonus Codes online.