Our user is unable to sign in to their new laptop using their business email address.

Question

Our user is unable to sign in to their new laptop using their business email address.

Corey Manshack 0

We have added our company domain to Azure AD (entra). We used to have our users create a microsoft account with our @companyemail.com to sign in to their laptops so we could reset their password if they left the company and gain access back to the laptop. Now after adding our domain to Azure Entra the microsoft account signup page says "You can't sign up with a work or school email. Use your personal email instead.". When we try to sign in with their @companyemail.com address it says "We couldn't find a Microsoft account. Try entering your details again, or create an account." How can we have our users sign in to Microsoft services using Azure AD (entra)? Additionally, when we try to sign in with a 'work or school account' on the device it says the Microsoft account doesn't exist.

Corey Manshack 0 Reputation points

2025-12-12T16:10:09.11+00:00

Additionally, when we try to sign in with a 'work or school account' on the device it says the Microsoft account doesn't exist.

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Corey Manshack 0 Reputation points

2025-12-12T16:10:09.11+00:00

Additionally, when we try to sign in with a 'work or school account' on the device it says the Microsoft account doesn't exist.

Answer 1

Harold Milan 16,115 Independent Advisor

Hi,

You can’t create personal Microsoft accounts with your company domain anymore because it’s now managed by Azure AD (Microsoft Entra ID). The correct way forward is to use work or school accounts from Azure AD for sign-in, join devices to Azure AD, and enable password reset and licensing through the Microsoft 365 admin center. This ensures secure access and proper management under your organization’s domain.

I hope this helps!

Corey Manshack 0 Reputation points

2025-12-12T17:03:45.86+00:00

What if our laptops are windows home edition? Do they all have to be upgraded? Also what do we do about all of our personal microsoft accounts that were created under the company domain?
Harold Milan 16,115 Reputation points Independent Advisor

2025-12-12T17:06:46.5733333+00:00

Yes, if your laptops are running Windows Home, they must be upgraded to Windows Pro (or higher) to support Azure AD join and full enterprise management. Home edition cannot join Azure AD or enforce organizational policies.

Without upgrading, you can only use work accounts for apps, but you won’t get device compliance, centralized security, or password reset integration.
Corey Manshack 0 Reputation points

2025-12-12T17:28:23.0433333+00:00

What do we do about all of our personal Microsoft accounts that were created under the company domain? This could create some issues for logins on the people that had a personal account prior to Microsoft AD right?
Harold Milan 16,115 Reputation points Independent Advisor

2025-12-12T17:55:40.56+00:00

Personal Microsoft accounts using your company domain will eventually conflict with Azure AD-managed identities. They cannot be merged into work accounts. Each user must:

Change the email on their personal Microsoft account to a non-company address (e.g., Gmail, Outlook.com personal).

Keep their data (OneDrive, Xbox, etc.) under the new email.

Stop using the company domain for personal accounts going forward.

Your IT team should communicate this clearly, set a deadline, and enforce domain control in Azure AD to prevent future issues.

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Our user is unable to sign in to their new laptop using their business email address.

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