Error message "Looks like you need access to this dev store"

Topic summary

Developers encounter an access error when running npm run dev after scaffolding a Shopify extension. The error message states “Looks like you need access to this dev store” and suggests logging into the store directly or creating a staff account.

Reported Solutions:

Solution 1 (from Astides):

  • Log out of all Shopify accounts
  • Clear browser cache/cookies for shopify.com
  • Close all browsers
  • Run npm run dev -- --reset
  • Login to Partner Portal when prompted

Solution 2 (from Viktor_Shtodler):

  • Use shopify auth to check current login status
  • Run shopify auth logout followed by shopify auth login in CLI

Multiple users confirmed experiencing the same issue. The discussion remains open with community-provided workarounds focused on authentication reset procedures.

Summarized with AI on October 31. AI used: claude-sonnet-4-5-20250929.

Ok ,

  1. log out from all shopify accounts in your browser

  2. clear cache / cookies from your browser for shopify.com

  3. close all browsers

  4. % npm run dev – --reset

  5. at prompt to open browser to login to partner portal, do this. login as usual.

  6. worked for me :slightly_smiling_face:

hope it helps.