OpenPath Woo 3.9.1 for WooCommerce

Release date: August 28, 2026

Download OpenPath for WooCommerce 3.9.1

Version 3.9.1 adds comprehensive duplicate-transaction protection for payments and refunds. It also improves recovery when WooCommerce cannot determine whether OpenPath processed a request.

What changed

• Added stable checkout intents that remain connected across replacement WooCommerce orders, browser sessions, devices, classic checkout, and Cart and Checkout Blocks.
• Added an atomic checkout-intent claim to prevent concurrent requests from creating multiple OpenPath transactions.
• Added non-sensitive request fingerprints so an idempotency key cannot be reused for a different customer, amount, currency, or cart.
• Added authoritative order binding. A replayed approval completes only the originating order, links and cancels replacement orders, and never marks two orders paid with the same transaction.
• Added fail-closed handling for uncertain responses, including OpenPath response codes 400, 420, 421, and 430, transport failures, empty or malformed responses, unknown codes, and approvals without a transaction ID.
• Added automatic status reconciliation for uncertain payments. WooCommerce keeps the order on hold and blocks another processor attempt until OpenPath provides an authoritative result.
• Added idempotent refund requests and refund-status reconciliation to prevent repeated admin actions or lost responses from creating duplicate refunds.
• Corrected refund handling so declined or errored refunds return an error instead of being reported as successful.
• Added exactly-once local refund completion and stock-restoration safeguards.
• Added order notes and related-order links to improve fulfillment, accounting, and support visibility.

Operational requirements

• Verify payment approval, decline, uncertain-response reconciliation, replacement-order handling, partial refunds, full refunds, classic checkout, Blocks checkout, HPOS, saved cards, and subscriptions in a sandbox or production test site before rollout.

Installation

Download the release ZIP, then in WordPress go to Plugins > Add New Plugin > Upload Plugin. Upload openpath-woocommerce-3.9.1.zip, install it, and confirm the installed version is 3.9.1 before testing.