Migrating a Domain to 365 Bussniness that was used for Personal Accounts

Question

Our company is in the process of migrating from google workspaces to office 365 business. We have a company domain that is utilized for staff emails and those emails were used to sign up for personal Microsoft accounts so they could log onto their assigned computers (most of which are running a home version of windows).

We want to migrate this domain into 365 but I want to know if it will have any affect on their current accounts and ability to sign in their computers. Do the personal accounts automatically convert to a work account when the domain transfers and would that cause an issue trying to log onto a home version of windows?

We have plans to transition our equipment to windows pro for easier staff sign on and security controls but that is a long term phased project so I am looking for interim measures to maintain our productivity until that time. My initial thought is for staff to change the email on their personal accounts to a true personal email prior to migrating the domain but I welcome any other solutions or suggestions.

Answer 1

The personal Accounts won't convert into a business account. There will be always a private and a business account then. It doesn't effect the user at all in my experiance as for login into PC's always the business account is taken when the devices are registerd in the related azure active directory domain. If you login to the webportal of office user has two accounts then as a choice and needs to take the business account thats normal behavior.

Anyways you will gonna have more problems with the windows 10 home os versions.

Windows 10 Home edition cannot be joined to a domain.

Beside that Windows AutoPilot supports the following Windows 10 operating system editions:

Windows 10 Pro

Windows 10 Pro Education

Windows 10 Pro for Workstations

Windows 10 Enterprise

Windows 10 Education
-Windows 10 Enterprise 2019 LTSC

Reference:
https://learn.microsoft.com/en-us/windows/deployment/windows-autopilot/windows-autopilot-requirements

If you want to domain join your computer, you'll need to upgrade to Windows 10 Professional.

Upgrade Windows 10 Home to Windows 10 Pro
https://support.microsoft.com/en-us/help/12384/windows-10-upgrading-home-to-pro

As a possible migrationpath i would setup a tenant with intune and everything and all user accounts and then update the machine step by step reset them and let them do an autopilot roleout into the business tenannt.