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unknown login

  1. R

    Unknown login on Macbook Air by _mbsetupuser?

    I am new to Macrumors, so please forgive me if I am posting this in the wrong area or making some other blunder. I noticed some changed settings in Sharing that I did not do (I had turned off all sharing, but then noticed "administrators" listed as being able to share files and printers on my...
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