Hi,
Microsoft accounts, such as those ending in @outlook.com or hosted on onmicrosoft.com domains, are designed as individual user identities and cannot be merged across personal and business contexts due to security and compliance policies.
For instance, a personal Microsoft account cannot be combined with a work or school account associated with your organization's Azure Active Directory (Azure AD), as they operate in separate identity namespaces.
If your business account is part of an Azure AD tenant, you can invite external users or use guest accounts for collaboration, but this doesn't equate to merging.
That said, you do have the option to close unused accounts entirely. To close a personal Microsoft account, log in at account.microsoft.com, navigate to the "Your info" section, and select "Close your account" after reviewing data implications.
For a business account in Azure AD, closing it requires administrative privileges; contact your organization's global admin to deactivate or delete the user via the Azure portal under Users > Delete user.
Please note that closing an account is irreversible after a 60-day grace period, and it will permanently delete associated data, emails, and subscriptions like Office 365.
If your goal is to consolidate access for your business needs, I recommend focusing on the business account and using it as your primary identity, while archiving or exporting data from personal accounts before closure.
This approach minimizes fragmentation while maintaining compliance with enterprise standards.
If this response has been helpful in clarifying your options, please consider hitting "accept answer" 😊
Best regards,
VP