“Error loading route” after Outlook authentication

Events
1

:compass: Bug: “Error loading route” after Outlook authentication — Discourse Events Plugin

Hi Angus,

I’ve run into a UI bug after authenticating an Outlook calendar provider using a custom Azure app in the Discourse Events plugin.

:red_exclamation_mark:What happens

When I click “Authenticate” in the plugin UI, the Microsoft login and permissions popup completes successfully. However, when I’m returned to Discourse, I get the following message:

Error loading route
(This message is only shown to site administrators)

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IMG_02851206×1633 244 KB

This happens immediately after the redirect from Microsoft.

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IMG_02861206×1379 349 KB

The provider status remains stuck on “Ready, and event sync never completes.

:test_tube: Steps I’ve taken

  • Verified the Azure app config (client ID, secret, redirect URIs
  • Recreated the Outlook source from scratch with a valid calendar ID
  • Confirmed the Microsoft OAuth popup completes correctly and grants access
  • Rebuilt the forum and refreshed tokens in Sidekiq

:magnifying_glass_tilted_right: Diagnosis

My guess is this is a frontend route handling issue in the plugin after the /auth/authorize callback — possibly missing a return_to or mishandling the final transition.

:white_check_mark: What works

  • iCalendar sources
  • Google provider (although now showing 404 errors for another reason — might post separately)
  • Azure login popup and token request seem fine — the error happens after auth

:folded_hands: Help

Let me know if this is something that could be patched

Thanks again!