The Chromium profile directory is already used/locked by another BrowserContext instance or process

Question

I get the "The Chromium profile directory is already used/locked by another BrowserContext instance or process" error when I try to run a standard code with only one Browser instance.

Code:

import java.awt.BorderLayout;

import javax.swing.JFrame;
import javax.swing.WindowConstants;

import com.teamdev.jxbrowser.chromium.Browser;
import com.teamdev.jxbrowser.chromium.BrowserContext;
import com.teamdev.jxbrowser.chromium.swing.BrowserView;

public class ReadFile {
    public static void main(String[] args) {
        Browser browser = new Browser(BrowserContext.defaultContext());
        BrowserView view = new BrowserView(browser);

        JFrame frame = new JFrame("Google");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.add(view, BorderLayout.CENTER);
        frame.setSize(700, 500);
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);

        browser.loadURL("http://google.com");
    }
}

What might be the reason for that and how can I solve this problem?

Thanks in advance

Answer 1

The "The Chromium profile directory is already used/locked by another BrowserContext instance or process" error message indicates that there is a concurrent access to the Chromium data folder.

Please take a look at the following article which explains the root cause of this issue and possible ways to resolve it: https://jxbrowser.support.teamdev.com/support/solutions/articles/9000012878-creating-browser

If such exception is thrown during a startup, and your application does not create multiple BrowserContext instances, this usually indicates there is a running "browsercore" process that already uses the particular data directory.