- Plesk for Linux
- Plesk for Windows
When clicking on Updates and Upgrades in Plesk, the page prompts for a root password or does not open at all with one of the following error messages in a web-browser:
The connection has timed out
This site can’t be reached
When starting Plesk Installer in a command-line interface, the following message is shown:
BUSY: Update operation was locked by another update process.
Error: Unable to start Plesk Installer. The following error has occurred: Installation could not be started: another installation procedure is currently running.
A Plesk Installer process is running on the server already, but only one Plesk Installer process can be launched at a time.
Terminate active Plesk Installer processes:
Note: Before applying the solution below, make sure that other users on the Plesk server are not using Plesk Installer.
Connect to the Plesk server via SSH (Linux) / RDP (Windows Server)
Stop Plesk Installer processes (on Windows Server, use a command prompt as Administrator):
# plesk installer stop
For Plesk Onyx, apply the following steps:
Connect to the Plesk server via SSH
Find the PIDs of Plesk Installer processes:
# ps aux | grep install | grep -v grep
root 12345 1.5 0.8 136856 18280 ? S 20:43 0:00 /var/cache/parallels_installer/parallels_installer_CentOS_7_x86_64_3.21.3 --service-mode --enable-xml-output --ssl-cert /usr/local/psa/admin/conf/httpsd.pem --branch release,stable --web-interface --with-ssl --disable-browser
root 12346 0.0 0.1 109776 2808 ? S 20:43 0:00 /var/cache/parallels_installer/parallels_installer_CentOS_7_x86_64_3.21.3 --service-mode --enable-xml-output --ssl-cert /usr/local/psa/admin/conf/httpsd.pem --branch release,stable --web-interface --with-ssl --disable-browser
Kill found processes using the command below. Replace 12345 12346 with actual PIDs from the step above:
# kill -9 12345 12346
/tmp/psa-installer.lockfile, if it exists
Start Plesk Installer
Apply one of the following solutions:
Terminate Plesk Installer processes using a command prompt:
Connect to the Plesk server via RDP
Start a command prompt
Find the PID of a Plesk Installer process:
wmic process where "caption like '%installer%'" get processId,caption
**Caption ProcessIdai.exe 6444
Kill the process using its PID:
taskkill /PID 6444 /F
taskkill /FI "IMAGENAME eq ai.exe" /F
Terminate Plesk Installer processes using Windows Task Manager
Open Task Manager (Open Windows Start > type "Task Manager")
Right-click on each existing "Plesk Installer" process and click End Task:
Note: Plesk Installer processes can have one of the following names depending on Plesk version: Plesk Installer, ai.exe, parallels-installer.exe or plesk-installer.exe.
Guys, what is going wrong with Plesk? Since 11/12 we are having nearly an issue every week. Today is this one...
Hi @Arturo Rêvez!
The described behavior in the article is not an issue in most cases. Usually, you can see such information message because another process is already running on the server, e.g. automatical updates installation procedure is running
However, issue each week is weird indeed...I suggest creating a ticket to Techincal Support in order to check all met issues together because it looks like that something is wrong on the server
I have a lot of problems with plesk, i cant install extensions, i cant update, i bought imunify 360 and keep my websites updated but the entire server is infected, i dont know what to do.
Hi,Yukio Rogel we have general information on how to keep Plesk secure, but can provide with some more targeted recommendations. Please create a ticket so support can see what is happening and provide with recommendations.
plesk installer stop
Requested Plesk Installer shutdown.
plesk installer update
ERROR: No products are installed yet. Use the 'install' command to install one first.
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