Seeing the “Maximum available quantity has been added to cart” error in WooCommerce? This happens when a product’s stock limits prevent additional items from being added. Here’s how to fix it.
Why Does This Error Happen?
- Stock settings are restricting the available quantity.
- WooCommerce session cache is not updating properly.
- Custom code or plugins are interfering with cart functionality.
Solutions to Fix the Issue
1. Check WooCommerce Stock Settings
Ensure the product has sufficient stock:
- Go to Products > Edit Product.
- Scroll to Inventory settings.
- Make sure Stock quantity is set correctly.
- Uncheck “Sold Individually” if you want to allow multiple purchases.
2. Clear WooCommerce and Browser Cache
Cached data may cause quantity issues. Clear cache:
- Go to WooCommerce > Status > Tools.
- Click “Clear transients” and “Clear customer sessions”.
- Clear your browser cache or test in incognito mode.
3. Allow Higher Quantities in WooCommerce
If WooCommerce enforces a limit, override it using this custom code:
1 2 3 4 | function custom_wc_max_quantity($max, $product) { return 100; // Set maximum limit as needed}add_filter('woocommerce_quantity_input_max', 'custom_wc_max_quantity', 10, 2); |
4. Disable Plugins Causing Conflicts
Some plugins, such as stock management or cart limiters, may interfere.
- Disable plugins one by one to identify conflicts.
- Check WooCommerce > Status > Logs for error messages.
5. Refresh WooCommerce Cart Session
To force WooCommerce to update cart quantity correctly, add this code:
1 2 3 4 5 | function refresh_cart_session() { WC()->cart->calculate_totals(); WC()->cart->set_session();}add_action('wp_loaded', 'refresh_cart_session'); |
6. Check Theme Compatibility
If you’re using a custom theme, it might be overriding WooCommerce settings.
- Switch to a default theme like Storefront or Twenty Twenty-Four.
- Test if the issue persists.
Final Checks
Confirm stock settings are correct.- Clear cache and WooCommerce transients.
- Disable interfering plugins.
- Use custom code to override limits if needed.
If you’ve tried all these fixes and still have the error, let us know your setup! 