Why am I seeing 'no page at this address' after reinstalling my app?

Technical Q&A

Topic summary

Core Issue:
Developers encounter a “no page at this address” error when reinstalling Shopify apps, particularly after uninstalling and reinstalling on development stores or changing app URLs.

Root Cause:
The problem stems from stale session data in the database.sqlite file. When an app is uninstalled while not running, it doesn’t receive the app/uninstalled webhook and fails to remove shop tokens from SESSION_STORAGE. Upon reinstallation, the app detects the shop as already registered but attempts to use outdated tokens, causing Shopify to reject the session.

Primary Solutions:

  • Delete session database: Remove the database.sqlite file and restart the app before reinstalling
  • Manual OAuth re-authentication: Visit the app’s OAuth URL directly (format: https://myapp-domain.com/api/auth?shop=my-dev-shop.myshopify.com)
  • App name conflict: Change the app name if it matches a previously installed app

Status:
Multiple users confirmed these workarounds resolve the issue, though Shopify support has been investigating the underlying App Bridge-related problem for months without an official fix.

Summarized with AI on November 11. AI used: claude-sonnet-4-5-20250929.
4

Sadly, this never worked.