The 503 Service Unavailable error means that your server is temporarily unable to process the request due to maintenance or limited capacity. Try to follow these steps to fix the issue on your WordPress site.
How to Fix 503 Service Unavailable Error in WordPress?
- Check your WordPress site’s server error logs: The error logs on the server may contain more information about the cause of a 503 Service Unavailable error. You can access these logs through your hosting control panel or by contacting your hosting provider.
- Deactivate all plugins: If the error appears after you install a new plugin or make changes to an existing plugin, try deactivating all plugins to see if it goes away. To do this, go to your WordPress dashboard and select “Plugins” from the left-hand menu. Then, click the “Deactivate” link under each plugin. Deactivating the plugins one after another will usually reveal which of the plugins is causing the error.
- Switch to a Default WordPress Theme: If disabling plug-ins failed to resolve the problem, the next step would be to switch to a default WordPress theme. And if you find your site working perfectly, it is your current theme that needs fixing. So contact the theme author.
- Increase the PHP memory limit: When you see the error message “Requested memory size of Y bytes exhausted,” it means that your site lacks the RAM necessary to perform a necessary task hence you see 503 Service Unavailable Error in WordPress. To increase PHP memory limits, first add this line of code to your wp-config.php file: define( ‘WP MEMORY LIMIT’, ‘256M’ );
- Contact your hosting provider: It is possible that the fault is due to a problem with your hosting server. If so, you should contact your hosting provider for further information.
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