Hiding Notifications of New WordPress Version in Admin Panel

In this note, we will consider how to remove (disable) visual notifications about updates.

When a new version of WP appears, notifications appear throughout the admin panel that an update is needed. Sometimes, such notifications need to be removed, while leaving the update check itself and the ability to update, for example, through the wp core update command.

Where Notifications are Displayed

To understand what is being discussed, let's see where notifications of the new version are displayed.

"WordPress X.X Available" in the Console

"Download Version X.X" in the footer

Plugin update counter in the admin menu

Total update counter in the admin menu (engine + themes + plugins + translations)

Total update counter in the admin bar (engine + themes + plugins + translations)

"Update to X.X" in the "At a Glance" widget in the Console

Code to Hide Notifications

<?php

// Hide notifications of new WordPress version
if ( 1 ) {

	// Total update counter in the admin bar
	add_action( 'admin_bar_menu', function ( $wp_adminbar ) {
		$wp_adminbar->remove_node( 'updates' );
	}, 999 );

	add_action( 'admin_menu', function () {

		// "WordPress X.X Available" in the Console - For Single installation
		remove_action( 'admin_notices', 'update_nag', 3 );

		// "WordPress X.X Available" in the Console - For Multisite installation
		remove_action( 'network_admin_notices', 'update_nag', 3 );

		// "Download Version X.X" in the footer
		remove_action( 'update_footer', 'core_update_footer' );

		// Total update counter in the admin menu
		remove_submenu_page( 'index.php', 'update-core.php' );

		// Plugin update counter in the admin menu
		$GLOBALS['menu'][65][0] = __( 'Plugins' );

	}, 999 );

	// "Update to X.X" in the "At a Glance" widget in the Console
	add_action( 'admin_head-index.php', function () {
		?>
		<style>
			#wp-version-message .button {
				display: none;
			}
		</style>
		<?php
	} );

}

Insert the code into the functions.php file of the theme.