Hey Magento enthusiasts! 👋

Having trouble with a "404 Not Found" error after a fresh Magento 2.4.2 installation? Don't worry, you're not alone. Let's troubleshoot together and get your store up and running smoothly!

1. Check Your Web Server Configuration:

Make sure your web server (Apache, Nginx) is properly configured to point to the correct Magento installation directory. Also, ensure that the web server has the necessary permissions to access and read Magento files.

2. Reindex Your Store:

Sometimes, a "404 Not Found" error can be caused by incomplete or missing index data. Use the following command in your Magento root directory to reindex:

php bin/magento indexer:reindex

3. Clear Cache:

Cached data might be causing the issue. Clear the cache by running:

php bin/magento cache:clean

4. Check URL Configuration:

Verify your base URLs in the Magento admin panel. Go to Stores > Configuration > General > Web and make sure your Base URLs are set correctly.

5. .htaccess and Rewrite Rules:

Confirm that your .htaccess file is correctly configured and the rewrite rules are enabled. This file is crucial for URL rewriting and can be a common source of "404 Not Found" issues.

6. File Permissions:

Ensure that file and directory permissions are set correctly. Magento has specific requirements, and incorrect permissions can lead to various issues.

7. Verify Mod_Rewrite:

Ensure that the Apache mod_rewrite module is enabled. You can check this by running:

sudo a2enmod rewrite

ollowed by a server restart.

8. Check Database Connection:

Ensure your Magento installation is connected to the correct database. Check your app/etc/env.php file for database configuration details.

9. Magento Mode:

Check your Magento mode. It should be set to "default" or "developer" during development. Use the following command to switch modes:

php bin/magento deploy:mode:set developer

Clear cache after changing the mode.

10. Review Server Logs:

Look into your web server and Magento logs for any error messages. This can provide valuable insights into what might be causing the issue.

If you've gone through these steps and the problem persists, don't hesitate to seek help from the Magento community or forums. There's a good chance someone has encountered a similar issue and can provide guidance.