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Windows 7: Should I be worried about an Unknown Account in my system files?

29 Oct 2013   #1

Windows 7 Home Premium 64 bit
Should I be worried about an Unknown Account in my system files?

In C:\Users Sammy
in the Security tab there are Accounts for

Sammy (Sammy-Six\Sammy)
Account Unknown (S-1-5-21-142667727-3232057827-3827426010-1006)
Administrators (Sammy-Six\Administrators)

All Accounts were set to Allow everything - except
None of the Accounts were Allowed Special Permissions

when I realised this...

I Denied everything to Account Unknown.

I am Sole User.

This Unknown Account is NOT present in the Security section of either Guest or Public Users.

My System SpecsSystem Spec
29 Oct 2013   #2

64-bit Windows 10 Pro

Hello Sammy,

An "Unknown" account with it's SID number showing like that in permissions (Security tab) is from an account that is no longer available (ex: from remote PC or USB drive with files from another PC) or has been deleted.

If you like, you can safely remove the account from the list in permissions. :)
My System SpecsSystem Spec
30 Oct 2013   #3

Windows 7 Home Premium 64 bit

Thank You, Brink.

You have set my mind at ease...

I use a 'dock' with my Netbooks... a Ziboo Zipad Netdock with built in DVD burner and Hard drive (plus 2 extra USB Ports)... That must be where the Account 'came from'

Again... Many Thanks for your timely advise
My System SpecsSystem Spec

30 Oct 2013   #4

64-bit Windows 10 Pro

You're most welcome Sammy. :)
My System SpecsSystem Spec

 Should I be worried about an Unknown Account in my system files?

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