Want to hide the WordPress core update notification from your WordPress dashboard? Let’s say that you want to reduce the clutter of your WordPress dashboard and focus more on the essential aspects of managing your website. Or, maybe you want to ensure that updates are only implemented after proper evaluation to minimize risks and prevent any potential negative impact on the website’s performance or functionality.

In this tutorial, we will guide you through hiding the WordPress core update notification on your website without using any plugins. Let’s dig in!
Disabling Core Update Notification on the WordPress Dashboard
Start by navigating to Appearance → Theme File Editor from your WordPress dashboard. On the Edit Themes page, click the functions.php from the Theme Files list to open the file editor. If you use a block theme, you can find Theme File Editor under the Tools menu.
Since this tutorial uses a file from an active theme, you might want to back up your site to avoid breaking your theme. And you can use a child theme or create a plugin yourself for the snippets to avoid losing your changes when you update or change your theme.
Hide the Notification on All Users
To hide the update notification on all users at any level, place the following code snippet at the bottom of the file.
function wpp_hide_wpupdate_notif() { remove_action( 'admin_notices', 'update_nag', 3 ); } add_action('admin_menu','wpp_hide_wpupdate_notif');
Click the Update File button to apply the code and reload the page to see the result.

Show the Notification for Admin Only
To hide the update notification for all users except users with admin roles, place the following code snippet at the bottom of the file.
function wpp_hide_wpupdate_notif() { if ( ! current_user_can( 'update_core' ) ) { remove_action( 'admin_notices', 'update_nag', 3 ); } } add_action('admin_menu','wpp_hide_wpupdate_notif');
Click the Update File button to apply the code and the update notification will not show on users with roles below the admin role which have the 'update_core'
capability.
The Bottom Line
You might want to hide the WordPress core update notification to reduce the clutter of your WordPress dashboard, or, maybe you want to ensure that updates are only implemented after proper evaluation. However, take note that regularly updating WordPress, themes, and plugins is crucial for maintaining site security, compatibility, and accessing the latest features and improvements. So, make sure you have other ways to keep you vigilant about keeping your WordPress site up to date.