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Small and medium business | Business Central, N...
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Login issue in BC

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Posted on by 219
Hi,

Over the past couple of days, we have been experiencing login issues in Business Central across multiple clients. Users who are already logged in are not encountering any problems; however, when they log out and attempt to log in again, an error appears stating that the system could not connect to the server.

Refreshing the page occasionally resolves the issue, but in some cases users are still unable to log in. Has anyone else encountered a similar issue recently? I have attached a screenshot of the error for reference.

 

Screenshot 2026-03-11 115011.png
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  • Suggested answer
    OussamaSabbouh Profile Picture
    11,491 Super User 2026 Season 1 on at
    Hello,
    This usually indicates a temporary connectivity or authentication issue between Business Central and Microsoft Entra (Azure AD) rather than a configuration problem. Since users who are already logged in continue working while new logins fail with “Cannot connect to the server,” it typically points to a temporary Microsoft service or authentication disruption, and refreshing works because it retries the authentication request. The recommended step is to check the Microsoft 365 / Dynamics 365 Service Health dashboard to see if there is an ongoing Business Central or Entra incident affecting logins.
     
    Regards,
    Oussama Sabbouh
  • Raghav3022 Profile Picture
    219 on at
    Hi Oussama,
     
    Thanks for your valuable info on this. Will check the Health dashboard.

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