Microsoft 365 Developer Programme

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Hi @Hang Tran

Thank you for sharing your concerns. 

First, I’d like to clarify that this is a user‑to‑user support forum. Moderators participating here do not have access to backend systems, nor can we directly intervene in Microsoft product functionality. Our role is limited to providing technical guidance and sharing best‑practice recommendations based on reported issues, requests, and scenarios.       

As far I know, the error Code 41101 when signing in to the Microsoft 365 Developer Dashboard typically indicates an issue specific to the Developer Program enrollment or profile state.  

To rule out any local or browser‑related issues, please first try basic troubleshooting steps such as clearing your browser cache and cookies, signing in manually using an InPrivate/Incognito window, or testing with a different browser. Additionally, please avoid accessing the dashboard via the link in the email and instead navigate to it directly.  

Reference: Welcome to the Microsoft 365 Developer Program | Microsoft Learn 

You could also review the Microsoft 365 Developer Program FAQ to confirm eligibility requirements.  

If the issue persists, the next step is to contact Microsoft Developer Support through the following link: Open Support requests | Microsoft Learn. Please note that this portal is a paid ticket and access is subject to certain conditions.  

Please update this thread to let me know how it goes. Your experience will be valuable to others in the community who may face similar activation or provisioning issues.  

Note: Please follow the steps in [our documentation] to enable e-mail notifications if you want to receive the related email notification for this thread.

The error message indicates that the account being used to sign in is not supported for the Microsoft 365 Developer Program dashboard.

To resolve this:

1. Verify that the correct type of account is being used
   • Sign-in options that are not supported for joining or accessing the Microsoft 365 Developer Program include:
     • Phone number sign-in.
     • Email accounts with the *.onmicrosoft.com domain.
   • Use either:
     • A Microsoft account (consumer MSA), or
     • A Microsoft Entra–enabled work or school email that is not *.onmicrosoft.com.
2. Rejoin or access the program with a supported email
   • Go to the Join the Microsoft 365 Developer Program page and choose Sign in.
   • Sign in with a supported Microsoft account or Microsoft Entra–enabled email (not *.onmicrosoft.com and not phone-number–based).
   • Remember this email; it is the member ID used to access the Developer Program dashboard.
3. Use the correct ID for each step
   • Developer Program dashboard sign-in: use the member ID (the Microsoft account or Microsoft Entra–enabled email used when joining the program).
   • Developer subscription sign-in (once provisioned): use the administrator ID that is created during subscription setup; this is different from the member ID.

If the current account is *.onmicrosoft.com or phone-number–based, create or use a different supported account and join/sign in again as described above.

References:

• Welcome to the Microsoft 365 Developer Program
• Microsoft 365 Developer Program FAQ