- 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:
PLESK_INFO: The connection has timed out
PLESK_INFO: This site can’t be reached
When starting Plesk Installer in a command-line interface, the following message is shown:
CONFIG_TEXT: BUSY: Update operation was locked by another update process.
CONFIG_TEXT: Error: Unable to start Plesk Installer. The following error has occurred: Installation could not be started: another installation procedure is currently running.
There is an already running Plesk Installer process on the server:
# ps aux | grep install | grep -v grep
root 11451 1.7 0.7 193396 14764 ? S 15:35 0:00 /usr/local/psa/admin/bin/autoinstaller --service-mode --enable-xml-output --ssl-cert /usr/local/psa/admin/conf/httpsd.pem --branch release,stable --web-interface --with-ssl --disable-browser
on Windows Server:
C:\> wmic process where "caption like '%installer%'" get processId,caption
Only one Plesk Installer process can be launched at a time.
Terminate active Plesk Installer processes to start Plesk Installer.
Note: Before applying the solution below, make sure that other users on the Plesk server are not using Plesk Installer.
For Plesk Obsidian
Stop Plesk Installer processes (on Windows Server, use a command prompt as Administrator):
# plesk installer stop
For Plesk Onyx