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Server error: '554 5.7.1 [R8] Authentication Failed, must login.' RRS feed

  • Question

  •  Bought Office 365 but found out I had Windows 8.1 on machine.  had immediate problems sending emails and got this prompt from "System Administrator"

               Server error: '554 5.7.1 [R8] Authentication Failed, must login.'

    I am a one man shop - I just use a local connection and am the only user.  I don't need an administrator.  I uninstalled 365 and downloaded an Office 2016 subscription from an approved 3rd party Microsoft vendor.  I still can't send emails but I can receive them.  I can also send and received emails on my IPhone and they show up in my Outlook desktop inbox.

    I just need to figure out how to uninstall or disable the Administrator account.  When I got into settings it would not let me disable control features for Administrator account without sounding like the local user account functionality would be disable too as I was afraid they were both linked.

    Need some help please.

    Thanks,

    Monday, August 31, 2020 8:43 PM