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Dynamics 365 Community / Forums / Small and medium business | Business Central, N... / Issue with debugging C...
Small and medium business | Business Central, N...
Suggested Answer

Issue with debugging Copilot Agent Session via VS Code

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Posted on by Perrett2311 56

Hi all,


We are attempting to debug an Agent Copilot session; however, no breakpoints are being hit when attaching to an Agent session.

We have already followed the guidance in Stefano Demiliani’s article:

https://demiliani.com/2025/10/21/dynamics-365-business-central-debugging-agent-sessions/

Despite this, we are still unable to debug Agent sessions.

Any assistance would be greatly appreciated.

Categories:
Dynamics 365 Business Central
I have the same question (0)
  • Suggested answer
    OussamaSabbouh Profile Picture
    OussamaSabbouh 12,965 Super User 2026 Season 1 on at
    Hello,
     
    In SaaS sandboxes, Agent/Copilot sessions typically run as background sessions, and the attach debugger has limitations there — you can reliably break only on supported session types (mainly WebServiceClient in sandbox). If your agent runs as a background/child session, you can attach but breakpoints won’t hit. Make sure you’ve published the exact build with Ctrl+F5 before attaching, and if needed use breakOnNext = WebServiceClient and route the logic through a web service call for debugging. Also verify sessionId/userId usage and that you have D365 ATTACH DEBUG if debugging on behalf of another user. In short: it’s usually session type + sandbox limitations, not your breakpoints.
     
    Regards,
    Oussama Sabbouh
  • Suggested answer
    Nimsara Jayathilaka. Profile Picture
    Nimsara Jayathilaka. 4,950 Super User 2026 Season 1 on at
    Hi
     
    I think In SaaS sandboxes, Agent sessions run as background sessions where breakpoints won't hit.
     
    Thanks
    Nimsara
  • Suggested answer
    YUN ZHU Profile Picture
    YUN ZHU 99,086 Super User 2026 Season 1 on at
    Hi, This appears to be a new feature in Business Central 2026 release wave 1 (BC28), you can wait a little longer.
     
    Thanks.
    ZHU

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