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"Unknown Users" listed in Properties/Security of a folder


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#1 Big_Z

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Posted 12 August 2012 - 09:06 PM

PROBLEM: "unknown Users" are listed in Properties/Security of a folder.

I have Windows 7, 64-bit.

The Properties/Security box of my "C:\Users\[my name]" folder lists two Users called
"Account Unknown (S-1-5-21-879640176-2077098734-2292519611-1001)"
and, "Home Users", in addition to the legitimate Users "SYSTEM", "Administrators", and
"[my name]".

After deleting the computer's Limited Acct, the 2 Users are still listed.

"S-1-5-21-879640176-2077098734-2292519611-1001" is not found by the Yahoo Search
Engine. The Windows folder-specific search engine for "C:" and for "Users" searches essentially
indefinitely. That for the folder named after myself finds nothing.

Especially regarding "S-...", is this caused by malware ? Would deleting either or both of these
Users cause harm ?

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#2 noknojon

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Posted 12 August 2012 - 09:56 PM

Hi -
What are the names of the accounts?

By any chance - TrustedInstaller, Authenticated Users, Administrators, SYSTEM, ...?
Do the additional unnamed users show up on all files?

Do you have any problems accessing the files?

See what happens if you remove the users from one of the files.

Thank You -



#3 Big_Z

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Posted 14 August 2012 - 12:46 AM

I have found the solution to this issue. This thread can now closed as "SOLVED". Thanks to noknojon, and to those who gave some thought to this problem.




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