Cannot add Entra ID user (work account) after setting up computer with local account first time

Question

We have a few Windows 11 work computers that, out of the box, were set up using a local account and not a Work/School account. Once set up, each user's local account was successfully connected to the user's Work/School accounts, so each user can seamlessly access all M365 resources.

The computers were also successfully joined to Microsoft Entra ID (by clicking on "Join this device to Microsoft Entra ID" during the "connect to Work/School account" process). The devices can be seen and managed in Intune and pick up the Work parameters such as password requirements and encryption. The users still log in using their local account details.

However, we cannot add a new Work/School account to the machines. When trying to add a new Work/School account, the error message is "Looks like this isn't a Microsoft account. Try another email or sign up for a new one." Presumably, this related to the computers being originally set up using a local account?

Is there a fix for this that is better than "wipe the computer and start again"?

Answer 1

Maybe to make the question clearer and focus on a single machine and the direct issue.

The first time a machine was started out of the box, the user signed in with a Microsoft 365 Personal/Family account. Once this was done, it was no longer possible to add a new user with their Microsoft Business account.

Is there any way to switch the machine from only using Microsoft 365 Personal/Family accounts to using Microsoft Business accounts? (Apart from a clean install of Windows with all data wiped.)

Answer 2

Did you manage to find a solution?

I am getting this same frustrating problem. For me, a Microsoft 365 account can be added to sign in to a PC only if it is a Global Admin account at https://admin.microsoft.com/Adminportal/Home#/users.