php previous_posts_link is showing same page

Hi guys,

For some reason link to previous posts stop working. By clicking the link site just showing same page with latest 10 posts but no with next 10 posts.

Code is below.

<?php
/**
 * The main template file
 *
 * This is the most generic template file in a WordPress theme and one
 * of the two required files for a theme (the other being style.css).
 * It is used to display a page when nothing more specific matches a query,
 * e.g., it puts together the home page when no home.php file exists.
 *
 * @link http://codex.ww.wp.xz.cn/Template_Hierarchy
 *
 * @package WordPress
 * @subpackage Twenty_Fourteen
 * @since Twenty Fourteen 1.0
 */

get_header(); ?>

<div id="main-content" class="main-content">

<?php
	if ( is_front_page() && twentyfourteen_has_featured_posts() ) {
		// Include the featured content template.
		get_template_part( 'featured-content' );
	}
?>

	<div id="primary" class="content-area">
		<div id="content" class="site-content" role="main">

		<?php
				$paged = (get_query_var_('paged')) ? get_query_var('paged') : 1;
   				query_posts('category_name=News&paged=' . $paged);
				if ( have_posts() ) :
				// Start the Loop.
				while ( have_posts() ) : the_post();

					/*
					 * Include the post format-specific template for the content. If you want to
					 * use this in a child theme, then include a file called called content-___.php
					 * (where ___ is the post format) and that will be used instead.
					 */
					get_template_part( 'content', get_post_format() );

				endwhile;
				// Previous/next post navigation.
				twentyfourteen_paging_nav();

			else :
				// If no content, include the "No posts found" template.
				get_template_part( 'content', 'none' );

			endif;
		?>

		</div><!-- #content -->
	</div><!-- #primary -->
	<?php get_sidebar( 'content' ); ?>
</div><!-- #main-content -->

<?php
get_sidebar();
get_footer();