Thank you for post!
I understand that you would like to merge Microsoft accounts, For security reasons, it’s not possible to merge or combine Microsoft accounts, nor can you transfer such things as your game progress or gamertag, account purchases and balance from one account to another.
Microsoft personal accounts and Microsoft 365 work or school accounts can be used side by side.
Hope this helps. Do let us know if you any further queries.
Thanks,
Akhilesh.
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