When we click on the Updates and Upgrades button inside tools and settings in Plesk, it gives one of the following errors in the browser.

The connection has timed out
This site can’t be reached
ERR_TIMED_OUT

If you try to run it using the command prompt, it will give you the following error.

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.

The issue occurs because of an already running process for the Plesk installer on the server.

Please refer to the steps below to fix the issue in Linux.

At first, log in to the server using root.

Find the process ID of the existing Plesk installer using the command below.

# ps aux | grep install | grep -v grep

You will get the process ID of the existing Plesk installer. Now, kill it using the command below.

# kill (PID of process)

Now, remove the psa-installer.lock file from the /tmp incase if it exists.

Now, run the Plesk installer. It should work fine.

Please refer to the steps below to fix the issue in Windows.

Connect the VPS via RDP. Please refer to how to connect VPS via RDP.

Open the command prompt and run the command below to find the process ID

# wmic process where "caption like '%installer%'" get processId,caption

Once you get the process ID, kill the process using the command below.

# taskkill /PID 7222 /F

You can also find the existing Plesk installation process directly from the task manager. Right-click on it and click End Task to kill the process.

Now, run the Plesk installer in Windows. It should work fine.

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