[Bot validation] TeamsJS runtime capability (2026-09-28) #77

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1. atktroubleshootingapp commented on Sep 28, 2026

   

   atktroubleshootingappbot

   on Sep 28, 2026

   More actions

   👋 Hi @Alive-Fish,

   Thank you for reporting this issue. Here is an AI-generated initial response:

   Classification: Not a bug — in the reported scenario, the tab calls dialog.url.open() after dialog.isSupported() returns false. TeamsJS documents that unsupported API calls fail; the button should not be enabled from the host name alone.

   • Microsoft’s TeamsJS guidance says to gate functionality with isSupported(), not the host name. Upgrading @microsoft/teams-js does not guarantee that a host implements a capability.
   • The capability matrix lists URL dialogs for Outlook on the web, but cautions that support can vary and runtime checks take precedence. It does not establish why this scenario returns false.

   What to do now:

   1. Disable the button when dialog.url.isSupported() is false; check again before calling dialog.url.open().
   2. If this occurs outside the synthetic scenario, provide the Outlook/browser version, manifest, and minimal reproduction to investigate the unexpected false result.

   Useful links:

   • No sufficiently relevant related issue found in the searched repos.
   • TeamsJS dialog.url API reference

   ---

   Note: AI-generated guidance may be incomplete or incorrect. Please verify suggestions before applying them.
2. atktroubleshootingapp

   added

   AI-generated responseAn AI-generated response has been posted to this issue.An AI-generated response has been posted to this issue.

   on Sep 28, 2026