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The bug can also be reproduced on rhel7,so cloned the bug.

+++ This bug was initially created as a clone of Bug #1007295 +++

Description
No box pop out when input a wrong password and retry connection for vnc guest

Version:
virt-viewer-0.5.6-7.el6.x86_64
libvirt-0.10.2-24.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
1. Prepare a vnc guest with password.
2. Use remote-viewer vnc://$ip:$port to connect the guest.
3. Input a wrong password for the guest.
4. Messages show "Unable to authenticate with remote desktop server at vnc://localhost:5900: Authentication failed Retry connection again?"
5. Click "yes",no box pop out for input password again.

Actual results：
As description.

Expected results:
Box pop out for input password again.

Additional info:
1.If use virt-viewer $vncguest,no such issue.
2.The issue doesn't exist with spice guest.
3.Attached virt-viewer debug info.

https://git.fedorahosted.org/cgit/virt-viewer.git/commit/?id=74b532f1ecf5affecc13e322723881ba42d2dd29

I can reproduce this bug with:
virt-viewer-0.5.7-7.el7.x86_64

Tested pass with:
virt-viewer-0.6.0-1.el7.x86_64

Steps:
1. Prepare a vnc guest with password.
2. Use remote-viewer vnc://$ip:$port to connect the guest.
3. Input a wrong password for the guest.
4. Messages show "Unable to authenticate with remote desktop server at vnc://localhost:5900: Authentication failed Retry connection again?"
5. Click "yes",a new authentication box pop out.
6. After input the correct password,guest can be launched successfully.

Refer to the above comments,move the bug to VERIFIED.

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://rhn.redhat.com/errata/RHBA-2015-0295.html