"Accound Unknown" Windows Vista Account

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I had to change properties on a Windows Vista folder today and found
something odd.  Under group or user names I had:  

Account Unknown (and a long serial number here)
Administrators (UserName\Administrator)
Users (UserName\Users)

I have never noticed the "Account Unknown" entry before, and when I
pull up the users list, there are only the two accounts that I know
about.  Guest account is disabled.  

Is this something I need to worry about?  How do I find out what it
is?  How do I get rid of it?  Should I get rid of it?  

I gave this account "deny" permissions with no ill-effects, so far.  

Re: "Accound Unknown" Windows Vista Account

On Jun 16, 6:50 pm, BlueBrooke wrote:
Quoted text here. Click to load it

Sounds to me like an old domain account. We've had a few Domain
accounts either deleted, or the PC cannot find a Domain Controller to
show the Display Name so it shows you the SID of the account (your
"serial number").


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