Linked account on outlook is gone and now I can’t get into the old account.

My old hotmail account was linked to my new outlook account until recently when the linked feature was disabled by MS.  Now I can't get into my old hotmail account because I forgot the old hotmail password (I never needed it because the accounts were linked and I could get to it from new new email).  I've tried all the options under how to reset my password for my old account and they have all failed.  How am I suppose to regain access to  my old hotmail?  There are important emails in there I need to have.

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