Hi M Abbas
Thanks for reaching out to Microsoft Q&A.
It's not possible to combine or merge a work or school account to a Microsoft personal account, but like personal accounts, there are ways accounts can be used side by side.
Please follow this page for details: https://support.microsoft.com/en-us/account-billing/combining-microsoft-accounts-06b122ca-7323-48f5-8cd7-c3408bcc2123
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