We have noticed that for each purchase made through our store, Shopify appends a “checkout_session_token__cn__*” cookie. The accumulation of these cookies eventually leads to a “Cookie Too Large” error. We can clear the cookies, but it just starts again until the error happens again. It looks like …

Possible fix: monorail-edge.shopifysvc.com might be blocked by your network. After unblocking this endpoint it seems the cookies behave differently, so far this is working after about a week of no issues. For us this would happen at least a few times a week. There is more here about that url: htt…

I’m also seeing this on live shops now.

FYI, this ended up not solving the issue. We are still getting the error.

Thanks. Chasing up the checkout folks.

Same issue here. Any updates to fix this? Shopify should delete the old cookies.

Hi @SBD , I’ve had tickets open with Shopify Plus support about this since Jan 10th, but I haven’t made much progress there and it’s still an issue. The duplicate cookie issue can be easily replicated by placing a few orders in a row. I’ve also noticed the 400 “Cookie Too Large” error is easier t…

Hey everyone, Just heard back - there’s a team working on resolving this. Thanks for all the reports.

Issue With Excessive Cookies Leading To "Cookie Too Large" Error On Shopify Storefront API

Retired Boards Appdev Custom Storefronts

SBD January 28, 2024, 10:39pm 3

Hey @jneusteter

Thanks for flagging this - running it by the Checkout team and will report back.

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Issue With Excessive Cookies Leading To "Cookie Too Large" Error On Shopify Storefront API

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