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Login issue in BC

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Posted on by Raghav3022

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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.

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Dynamics 365 Business Central

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OussamaSabbouh 16,423 Super User 2026 Season 1 on at

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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

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Raghav3022 227 on at

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Hi Oussama,

Thanks for your valuable info on this. Will check the Health dashboard.

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RockwithNav 9,125 Super User 2026 Season 1 on at

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Are you still facing this?

Which localization?

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YUN ZHU 101,202 Super User 2026 Season 1 on at

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Hi, hope the following helps.

Dynamics 365 Business Central: View the health status and subscribe to notifications

https://yzhums.com/21717/

Also, the following problem occurred yesterday; I don't know if it's related.

Thanks.

ZHU

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Selene Lobato 11 on at

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Hi all,

4 users of my org are having the same issue when trying to access to BC, do you get some news ?

Thanks!

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Khushbu Rajvi. 22,435 Super User 2026 Season 1 on at

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SL-30030706-0 for which localzation?

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Selene Lobato 11 on at

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@Khushbu Rajvi. We are in Australia, and specifically in Melbourne, Brisbane, and Perth reporting this same issue.

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