I have reproduced the issue on the latest CLI version. Yes, I am on the latest version I have searched existing posts and this report is not a duplicate. Yes, this isn’t a duplicate In which of these areas are you experiencing a problem? Theme Expected behavior I should be able to develop locally …

Hi @jon-radiant , I see you are running version 3.87.4. Would you mind upgrading to the latest version (3.89.0) and let me know if you are still experiencing the issue?

Following up. This is now day 2 of being completely blocked by this issue. The CLI sporadically works for a few minutes, then crashes and stays down for hours. No workaround seems to help. Could someone from the Shopify team confirm this is being actively looked into? A status update would be reall…

:waving_hand: this is something that’s being actively investigated. I cannot promise any timeline for a fix. I can say that there’s complexity in balancing the safety of the platform and ease of use for theme development. We have some long term plans to fix the scales but we’re trying to find some s…

I just started having the issue, honestly frustrating because I can’t do anything right now but wait

Hello, experincing the same issue and can not develop since a few days now. Also did not find a working older CLI version yet. At first browser development preview is starting okay, but after one or two navigations the authentication is lost. The Browser output then is: [grafik] In parallel the…

Are there any workarounds guys? This is blocking my work.

Hey guys, you can use the preview link as a workaround, it might be a bit slow but it should work. [image]

This is a huge issue for me as well. Using the preview link is not a workaround because I will have my agent look at both my live shopify site and my dev (local) theme as we are working. If I do the preview link then I can’t have the agent look at my live site to easily compare

I’m also experiencing this when making requests to any of the cart apis. So far I’ve managed to avoid the page load issue by using a VPN, but this isn’t working for fetch requests. [Screenshot 2026-05-19 at 08.58.30]

Experiencing the same problems.. hitting 403 Errors constantly - it is not solved.

Confirming this is still broken on CLI 3.94.3 (latest) — the “Solved” marker only addressed one user’s 3.87.4->3.89.0 case and does not resolve the underlying issue. Adding fresh diagnostics in case it helps the team: Environment: Shopify CLI 3.94.3 · macOS 15.6 · Node v24.13.0 · app-heavy store (m…

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Shopify CLI and Libraries

Gray-Shopify May 19, 2026, 10:46pm 31

Topic		Replies	Views
Theme dev proxy intermittently returns 403 / "Verify your connection" since May 7 2026 bot rate-limit change Shopify CLI and Libraries theme-commands	1	152	May 19, 2026
429 Too many requests Shopify CLI and Libraries theme-commands , app-dev-on-localhost	51	1459	July 7, 2026
CLI > Theme Dev > cart ajax 401 Shopify CLI and Libraries theme-commands	66	1529	May 20, 2026
Unable to run theme locally Online Store and Theme Development cli-themes	2	98	May 19, 2026
Intermittent 429 errors when using `shopify theme dev` Shopify CLI and Libraries theme-commands	5	480	November 14, 2025

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