App preview blinking: authenticating admin request

Retired Boards Appdev Tools

Topic summary

Developers are experiencing a widespread issue where Shopify app previews (launched via shopify app dev) continuously flicker and become unresponsive, preventing any interaction. The terminal repeatedly logs “authenticating admin request” during these failures.

Key Details:

  • The problem began suddenly this morning and affects both existing and newly created apps
  • Standard troubleshooting steps (browser changes, cache clearing, re-authentication, CLI updates) have not resolved the issue
  • Multiple users confirmed experiencing identical symptoms, indicating a global problem

Identified Cause & Solution:

  • The root cause appears to be related to Cloudflare tunnel
  • A temporary workaround was shared via community forum link, though one user reported the link became unavailable

Status: The issue remains ongoing with a potential temporary fix identified but not fully accessible to all affected developers.

Summarized with AI on October 24. AI used: claude-sonnet-4-5-20250929.
1

Hello everyone!

Since this morning, any app (started with the command ‘shopify app dev’ no longer works (even newly created ones).

When I open the preview pages (shopify app bridge surface), it starts flickering, making any clicks impossible. The terminal keeps displaying:

remix [shopify-app/info] authenticating admin request.

I’ve tried changing browsers, clearing the cache, and logging in again, shopify-cli update.

I should mention that all the apps were working fine until yesterday. I don’t think it’s a configuration issue because even new apps aren’t working. Can you help me? Thanks.

4 Likes
2

It having issue world wide. Also i have same problem like this since today morning.

1 Like
3

The issue is with Cloudflare tunnel. I got a temporary solution
https://community.shopify.com/post/2727253

1 Like
4

? thanks!!!

5

the link is not available