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WooCommerce Checkout Broken — Fast Fix for Lost Sales
Every failed checkout is a lost sale. I’ll debug the exact step where customers drop off and fix it fast.
A broken checkout is money leaving in real time, and it usually isn't WooCommerce itself — it's caching applied where it must never be, a payment-gateway callback failing, or a plugin conflict on the one page that can't tolerate one.
Sound Familiar?
What I'll Do
Where checkout actually fails
In rough order of how often each is the culprit.
- 1
Caching on cart, checkout or account pages
These pages are per-user and must never be cached. A page cache or aggressive CDN rule that catches them serves one customer another's cart, breaks nonces, or freezes the order. The fix is excluding those pages from every cache layer.
- 2
Payment gateway callback failing
Stripe, PayPal and others call back to your site to confirm payment. If that callback URL is blocked, redirected, or hitting an expired API key, orders get created without payment or hang on "processing". The gateway's logs show whether the callback is arriving.
- 3
Plugin or theme JavaScript conflict
A script error on the checkout page stops the checkout button working. The browser console names the failing script; the fix is isolating it on staging, not disabling plugins on the live store.
- 4
SSL or mixed content
Checkout must be fully HTTPS. A single asset loading over HTTP triggers a browser block that can silently break the payment form.
- 5
Server timeouts under load
If checkout is slow or fails at busy times specifically, it's a resource problem — too few PHP workers for the plan — not a code bug. See high server load.
What I check first, with you not losing orders
- Whether cart/checkout/account are excluded from every cache and CDN rule.
- The gateway's own transaction and webhook logs — the truth about whether payment is reaching it.
- The browser console on a real checkout attempt, for the failing script.
- Recent changes: an update, a new plugin, a theme change, a host migration — checkout was working until something moved.
- Whether it fails always or only under load, which separates a bug from a capacity problem.
Checkout questions
Orders are created but no payment is taken. Why?
Almost always the payment gateway's callback isn't completing, so the order is recorded but never confirmed as paid. The gateway logs confirm it, and the fix is restoring that callback path.
Checkout works for me but customers report failures. Why?
Frequently a caching layer serving customers a stale nonce or another user's session, which you won't see as an admin. Excluding checkout from caching resolves it.
Can you fix it without taking the store offline?
Yes — diagnosis happens on a staging copy or against the gateway logs, so the live store keeps taking the orders that do work while it's fixed.
Is this a WooCommerce bug?
Rarely. It's usually the environment around it — caching, a gateway config, a conflicting plugin — not WooCommerce core.
Related articles
Deep-dive guides on the same topic.
Ready to Get This Fixed?
Send me a message and tell me what's going on. I'll take a look and let you know how I can help.