WooCommerce Empty Cart Issue? Here’s Why It Happens & How to Fix It
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WooCommerce Empty Cart Issue? Here’s Why It Happens & How to Fix It

Mike0

Table of Contents

 Introduction

WooCommerce is one of the most popular WordPress eCommerce plugins. It provides a seamless shopping experience for customers. However, many store owners face the WooCommerce empty cart issue. This happens when products disappear from the cart, making checkout impossible.

A broken cart means lost sales and frustrated customers. This issue can be caused by session problems, caching conflicts, cookie misconfigurations, plugin conflicts, or HTTPS issues. In this guide, we’ll discuss the reasons behind this issue and how to fix it.

What is The WooCommerce Empty Cart Issue

The WooCommerce empty cart problem occurs when customers add products, but the cart resets due to failed session storage or misconfigured caching.

     Common Symptoms:

  • The cart empties after a page refresh.
  • Items disappear when proceeding to checkout.
  • The cart resets when users navigate between pages.
  • Logged-in users experience inconsistent cart behavior.

WooCommerce stores cart data using cookies and PHP sessions. If these mechanisms fail, the cart cannot retain user data.

Common Causes of WooCommerce Empty Cart Issues

1 Cache and Session Problems

WooCommerce depends on PHP sessions and transients to store cart information. If caching interferes, the cart may reset unexpectedly.

 Common Issues:

  • Page caching plugins like WP Rocket, W3 Total Cache, LiteSpeed Cache store outdated cart data.
  • Server-side caching (Cloudflare, NGINX FastCGI, Varnish, Redis) prevents session updates.
  • Browser caching loads an old cart version instead of the latest one.

2 Cookie and Session Expiry Issues

WooCommerce relies on cookies to track cart data. If cookies are not stored properly, the cart will reset.

Common Issues:

  • WooCommerce cookies (woocommerce_cart_hash, woocommerce_items_in_cart) are missing or blocked.
  • The PHP session timeout is set too low, causing sessions to expire.
  • SameSite cookie policy settings prevent WooCommerce from setting cookies correctly.

3 Theme and Plugin Conflicts

Themes and plugins can override WooCommerce session handling, AJAX requests, or cart management.

Common Issues:

  • Security plugins (Wordfence, iThemes Security) block WooCommerce AJAX requests.
  • Optimization plugins (Autoptimize, WP Super Minify) modify WooCommerce scripts incorrectly.
  • Theme functions interfere with WooCommerce’s default cart behavior.

4 Incorrect HTTPS/SSL Configuration

WooCommerce requires a consistent HTTPS setup. If there are mixed HTTP/HTTPS content issues, session data may not persist.

Common Issues:

  • The WooCommerce session breaks due to mixed content warnings.
  • The site loads on HTTP instead of HTTPS, causing session inconsistencies.
  • SSL is incorrectly configured, preventing WooCommerce from storing cart data securely.

5 PHP Sessions and Hosting Limitations

WooCommerce uses PHP sessions to manage cart data. If sessions are disabled, WooCommerce cannot store the cart.

Common Issues:

  • PHP sessions are disabled on the server, preventing WooCommerce from tracking the cart.
  • The hosting provider has insufficient memory allocation for PHP sessions.
  • WooCommerce session handling is misconfigured or blocked by hosting settings.

6 Custom Code or Functions Affecting the Cart

Custom PHP or JavaScript functions can interfere with WooCommerce session management, causing cart issues.

 Common Issues:

  • Custom redirects (wp_redirect()) clear WooCommerce sessions unexpectedly.
  • AJAX conflicts occur when custom scripts modify WooCommerce’s cart functionality.
  • Custom functions override WooCommerce session and cookie handling.

add_action( ‘template_redirect’, function() {

if ( is_cart() && !WC()->cart->get_cart_contents_count() ) {

error_log(‘Cart is empty. Possible session issue.’);

}

});

This script logs a cart empty issue whenever the cart fails to store items properly, helping diagnose session-related problems.

WooCommerce Empty Cart Issue

WooCommerce Empty Cart Issue: How to Fix It

The WooCommerce empty cart issue frustrates both store owners and customers. A broken cart means lost sales and a bad shopping experience. This problem happens due to cache conflicts, cookie settings, PHP session failures, or plugin issues.

In this section, we will discuss step-by-step solutions to fix the WooCommerce cart empty issue. Follow these methods to ensure your cart functions correctly.

1Clear Cache and Disable Caching for Cart Pages

Caching plugins and server-side caching can cause the cart to reset. WooCommerce cart pages store dynamic data, so caching them leads to cart disappearing issues.

Steps to Fix It:

  •  Disable caching for /cart/, /checkout/, and /my-account/ pages.
  • If using WP Rocket, W3 Total Cache, or LiteSpeed Cache, exclude WooCommerce pages.
  • On Cloudflare, create a Page Rule to bypass cache for cart pages.
  • Clear browser cache and test the cart again.

2 Enable and Check WooCommerce Cookies

WooCommerce stores cart data in cookies. If cookies don’t work, the cart will empty after refresh.

Steps to Fix It:

  • Make sure WooCommerce cookies (woocommerce_cart_hash, woocommerce_items_in_cart) are enabled.
  •  Open Chrome DevTools (F12) → Application → Cookies and check if cookies exist.
  •  If missing, add this code to wp-config.php:

define( ‘COOKIE_DOMAIN’, ” );

define( ‘COOKIEPATH’, ‘/’ );

  • Update your browser settings to allow third-party cookies.

3 Check for Theme and Plugin Conflicts

A theme or plugin conflict can break the WooCommerce cart function. Some themes modify cart scripts, while plugins may block AJAX calls.

Steps to Fix It:

  • Switch to the default Storefront theme and test the cart.
  • Disable all plugins except WooCommerce and check if the cart works.
  • Reactivate plugins one by one to find the one causing issues.
  •  If using a security plugin like Wordfence or iThemes Security, check if it’s blocking WooCommerce AJAX.

4 Ensure Proper HTTPS and SSL Setup

WooCommerce requires HTTPS to securely store cart session data. If SSL is misconfigured, cart data may be lost.

Steps to Fix It:

  • Open WooCommerce > Settings > Advanced and force secure checkout.
  •  Use SSL Check tools to detect mixed-content errors.
  • If site URLs are incorrect, update them in the database using this SQL query:

UPDATE wp_options SET option_value = ‘https://yourwebsite.com’ WHERE option_name IN (‘siteurl’, ‘home’);

  • Add this to wp-config.php to force HTTPS on admin pages:

define( ‘FORCE_SSL_ADMIN’, true );

5 Verify PHP Sessions and Server Configuration

WooCommerce relies on PHP sessions to store cart data. If PHP sessions are disabled, the cart will reset on page refresh.

Steps to Fix It:

  •  Go to WooCommerce > Status > Logs and check for session errors.
  • Enable PHP sessions in php.ini:

session.save_path = “/var/lib/php/session”

session.gc_maxlifetime = 86400

  • Increase PHP memory limit in wp-config.php:

define( ‘WP_MEMORY_LIMIT’, ‘256M’ );

  • Contact your hosting provider to enable PHP sessions if they are blocked.

6 Fix Custom Code or Function Issues

Custom PHP or JavaScript functions can break WooCommerce cart sessions. If a theme or custom code clears sessions, the cart will not store data.

Steps to Fix It:

  •  Check if your theme has custom WooCommerce AJAX handlers.
  • If your site redirects users after adding items, add this fix:

add_filter(‘woocommerce_add_to_cart_redirect’, ‘__return_false’);

  • Log WooCommerce cart errors to identify issues:

add_action( ‘template_redirect’, function() {

if ( is_cart() && !WC()->cart->get_cart_contents_count() ) {

error_log(‘Cart is empty. Possible session issue.’);

}

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});

  • Disable any custom WooCommerce hooks that override session handling.

WooCommerce Empty Cart Issue: Preventing Future Problems

Fixing the WooCommerce empty cart issue is important, but preventing it is even better. If your cart keeps resetting, you may lose customers and sales.

In this section, we’ll discuss best practices to ensure your WooCommerce cart works properly. These tips will help prevent session errors, cache conflicts, and plugin issues.

1 Keep WooCommerce, Plugins, and Themes Updated

Outdated software can cause compatibility issues that break the WooCommerce cart.

Why This Matters?

  • Older versions may have bugs affecting WooCommerce session handling.
  • Some updates fix cart issues caused by outdated PHP functions.
  •  Plugin conflicts increase when one plugin updates but others don’t.

How to Prevent It?

  • Update WooCommerce, WordPress, and all plugins regularly.
  • Check plugin changelogs before updating to avoid conflicts.
  • Use a staging site to test updates before applying them live.

2 Configure Caching Correctly for WooCommerce

Caching plugins improve website speed but can break cart functionality.

Why This Matters?

  • Caching WooCommerce cart pages prevents real-time cart updates.
  • Server-side caching (NGINX, Varnish, Cloudflare) can block session storage.
  •  Browser caching loads old cart data instead of updating it.

How to Prevent It?

  • Exclude /cart/, /checkout/, and /my-account/ from all cache settings.
  • If using Cloudflare, create a Page Rule to bypass cache.
  • Clear WooCommerce transients regularly in WooCommerce > Status > Tools.

3 Enable Persistent WooCommerce Sessions

WooCommerce relies on sessions and cookies to store cart data.

Why This Matters?

  • If sessions expire quickly, the cart may empty after inactivity.
  • Some hosts disable PHP sessions, preventing WooCommerce from storing cart data.
  • Incorrect cookie settings stop WooCommerce from tracking cart items.

How to Prevent It?

  • Increase session lifespan in WooCommerce settings.
  • Ensure your server allows PHP sessions in php.ini.
  • Set WooCommerce cookies properly in wp-config.php.

5 Test for Plugin and Theme Conflicts Regularly

Plugins and themes can override WooCommerce settings, breaking the cart.

Why This Matters?

  • Some plugins modify WooCommerce cart scripts, causing conflicts.
  • Security plugins block WooCommerce AJAX calls, preventing cart updates.
  • Custom themes may not be fully compatible with WooCommerce.

How to Prevent It?

  • Test cart functionality after installing new plugins.
  • Use default themes (Storefront, Twenty Twenty-Four) to check for issues.
  •  Monitor WooCommerce logs for errors after updates.

5 Set Up SSL and HTTPS Correctly

SSL issues can reset cart sessions, causing items to disappear.

Why This Matters?

  • Mixed content (HTTP & HTTPS) causes session failures.
  • Some browsers block cart cookies if SSL is misconfigured.
  • WooCommerce needs secure connections for proper session handling.

How to Prevent It?

  • Enable Force SSL in WooCommerce settings.
  • Ensure all URLs use HTTPS in WordPress settings.
  • Check SSL errors using Why No Padlock or SSL Labs Test.

6 Regularly Monitor WooCommerce Logs

WooCommerce logs provide insight into session errors and cart failures.

Why This Matters?

  • Log files help identify cart session problems quickly.
  • Detects plugin conflicts before they affect customers.
  • Tracks errors caused by hosting restrictions.

How to Prevent It?

  • Check logs in WooCommerce > Status > Logs.
  • Enable WP_DEBUG_LOG in wp-config.php to capture errors:

define( ‘WP_DEBUG’, true );

define( ‘WP_DEBUG_LOG’, true );

define( ‘WP_DEBUG_DISPLAY’, false );

  • Use third-party monitoring tools to track cart behavior.

WooCommerce Empty Cart Issue: Advanced Debugging & Support

If your WooCommerce cart keeps emptying, even after fixes, advanced debugging is needed. Some cart issues require deeper troubleshooting to identify the root cause.

In this section, we will cover how to debug WooCommerce cart problems. We’ll also discuss when to seek support from WooCommerce support expert

1 Enable WooCommerce Debug Mode for Logs

Debug logs help track cart session errors and conflicts.

Why This Matters?

  • Captures cart session failures, database errors, and plugin conflicts.
  •  Helps find missing WooCommerce cookies or broken AJAX requests.
  • Essential for identifying PHP errors affecting cart behavior.

How to Enable WooCommerce Logs?

  •  Go to WooCommerce > Status > Logs.
  • Select wc-session-handler.log to check for cart session errors.
  • Turn on debug mode in wp-config.php:

define( ‘WP_DEBUG’, true );

define( ‘WP_DEBUG_LOG’, true );

define( ‘WP_DEBUG_DISPLAY’, false );

  • Check error logs in /wp-content/debug.log.

2 Test WooCommerce Cart in Incognito Mode

Browser extensions and cache can block WooCommerce cart functions.

Why This Matters?

  •  Some ad blockers prevent WooCommerce cookies from storing cart items.
  • Browser cache loads an old cart instead of updating it.
  • Helps check if cart problems are browser-specific.

How to Test It?

  • Open Google Chrome in Incognito Mode (Ctrl + Shift + N).
  • Try adding products to the cart and refreshing the page.
  •  If the cart works, clear browser cache and disable extensions.

3 Use WooCommerce Cart Session Debugging Code

Sometimes, WooCommerce sessions fail due to server restrictions.

Why This Matters?

  • Detects if WooCommerce is storing cart session data.
  • Identifies session expiration issues in PHP or database.
  • Helps confirm if PHP sessions are working correctly.

Debug WooCommerce Cart with This Code

add_action( ‘template_redirect’, function() {

if ( is_cart() && !WC()->cart->get_cart_contents_count() ) {

error_log(‘Cart is empty. Possible session issue.’);

}

});

  • This logs session issues in wp-content/debug.log.

4 Test WooCommerce AJAX Calls Manually

WooCommerce cart functions rely on AJAX requests to update.

Why This Matters?

  •  Some themes or plugins block WooCommerce AJAX requests.
  • Helps find if AJAX errors are causing cart issues.
  • Fixes problems where cart doesn’t update in real-time.

How to Test WooCommerce AJAX?

  • Open Google Chrome Developer Tools (F12).
  • Go to Console > Network > Fetch/XHR.
  • Add a product to the cart and check AJAX requests.
  • If AJAX fails, a plugin may be blocking WooCommerce cart updates.

5 Check WooCommerce Database for Cart Errors

WooCommerce stores cart data in the database. If corrupted, carts may reset.

Why This Matters?

  • Detects database table issues affecting WooCommerce carts.
  • Fixes cases where cart data is not saved in sessions.
  • Ensures database tables are optimized and working properly.

How to Check Database?

  • Go to WooCommerce > Status > Tools.
  • Click Verify Database and Clear Transients.
  • If needed, run this SQL query in phpMyAdmin:

OPTIMIZE TABLE wp_woocommerce_sessions;

  • This cleans up WooCommerce cart session storage.

 Contact WooCommerce Support Expert

If your WooCommerce Empty Cart Issue persists despite applying all fixes, some issues require expert troubleshooting. Certain technical problems demand advanced debugging, database optimization, or server configuration adjustments.

Some Issues Require Expert Help:

  • Session Handling Failures – PHP sessions may not be storing cart data properly.
  • AJAX Request Errors – WooCommerce AJAX calls may be blocked or misconfigured.
  • Database Corruption – WooCommerce session tables may be missing or damaged.
  • Plugin Conflicts – Security or caching plugins may interfere with cart functionality.
  • Theme Compatibility Issues – Custom themes may override WooCommerce cart behavior.
  • Server Restrictions – Hosting providers may block necessary WooCommerce session handling.
  • Cookie and SameSite Policy Errors – Browser security settings may prevent WooCommerce cookies from working.
  • SSL and Mixed Content Issues – Incorrect HTTPS setup can cause cart session failures.
  • Firewall or Security Plugin Restrictions – Some security settings block WooCommerce session cookies.

These issues often require custom code adjustments, server-side debugging, or database fixes that go beyond regular troubleshooting.

 Need urgent help?

Call our WooCommerce experts at +1 888 602 0119 (US & Canada)
Use our WooCommerce support chat for real-time assistance.

 Conclusion

Fixing the WooCommerce Empty Cart Issue ensures a smooth checkout experience and boosts sales. Common causes include cache conflicts, session failures, AJAX errors, database issues, and plugin conflicts. Regular maintenance, proper configuration, and testing help prevent future cart issues, ensuring a seamless shopping experience for customers. Keep WooCommerce updated and monitor logs frequently.

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