The update of Parallels Panel has failed

Issue: After clicking on ‘Update’ button in Plesk Control Panel, browser opens a new tab at the URL https://server_address:8447. But it never opens and the browser displays a blank page.

In Parallels Plesk Panel version 10, port 8447 is used for autoinstaller wizard. Please make sure that port 8447 is not blocked on your server by firewall using the following commands:

# iptables -L | grep 8447 

# telnet localhost 8447

# netstat -anp |grep 8447

The issue occurred as the service 'autoinstaller' which is used to upgrade Plesk stopped running in the server. This service listens on port 8447. Hence when the service is not running, the connection to it will be refused.

Run the following script to fix the issue:

~~~~~~~~~~
# /usr/local/psa/admin/bin/autoinstaller --service-mode=update --enable-xml-output
~~~~~~~~~~

The issue should be fixed now. You need to upgrade Plesk always from the back end to avoid this issue.

Thank you.

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