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Windows 7: Unknown account appears in windows 7

10 May 2009   #1

Windows 7 Ultimate x86 build 7100
 
 
Unknown account appears in windows 7

Hello everyone. I have some question(or maybe a problem) and it's about accounts on my windows.
Some unknown account appeared on my windows with some strange name! So i would like to know is it normal, or is there something wrong like a hack or a consequence of an virus attack!!
Do i need to reinstall my windows!??
Take a look at the picture!



Attached Images
 
My System SpecsSystem Spec
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10 May 2009   #2

Windows7
 
 

A lot of references to things like browser hijack attempts turn up under searches for "s-1-5-21-1547161642"

I'd probably start by running Hijack This and seeing what else there may be, but yes, it would strike me as a likely infection.

There's some info at the following link:
http://spywarefiles.prevx.com/RRDFJF...253...EXE.html
My System SpecsSystem Spec
10 May 2009   #3

Windows 7 Ultimate x64 SP1
 
 

Yeah, that's not normal. Run some thorough scans with an Antivirus program. What build are you running, 7068? Download and clean install the official RC 7100 from Microsoft.

Official Windows 7 RC Available Right Now!
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10 May 2009   #4

Windows 7 Ultimate x86 build 7100
 
 

thanks guys for answers!!
Yes im running build 7068 now. And it worked perfect.
And i noticed this problem today i was surprised.

OK i will download and install the last one from MS sites tomorrow.
But im asking could some antivirus program help with that!?
Im using ESET Smart security now!!
My System SpecsSystem Spec
10 May 2009   #5

 

An account like that in the permissions is NOT a real indication of an issue. Those are actually normal to see. Still follow Airbot's recommendation to install the latest 7100 RC (as a clean install).
My System SpecsSystem Spec
10 May 2009   #6

Windows 7 Ultimate x86 build 7100
 
 

Ok! Thanks for advices. Im downloading and installing RC as soon as possible.

But this time im going to download and install a x64 bit version because i have 6GB of RAM.
My System SpecsSystem Spec
10 May 2009   #7

Windows 7 Ultimate x64 SP1
 
 

Quote   Quote: Originally Posted by Axematic View Post
Ok! Thanks for advices. Im downloading and installing RC as soon as possible.

But this time im going to download and install a x64 bit version because i have 6GB of RAM.

There you go, now you're talkin!
My System SpecsSystem Spec
10 May 2009   #8

Windows 7 x64
 
 

Quote   Quote: Originally Posted by Axematic View Post
Hello everyone. I have some question(or maybe a problem) and it's about accounts on my windows.
Some unknown account appeared on my windows with some strange name! So i would like to know is it normal, or is there something wrong like a hack or a consequence of an virus attack!!
Do i need to reinstall my windows!??
Take a look at the picture!
You will find such unknown accounts in every file and folder on your PC and sometimes more of them! It is creator account from second OS on your PC ,you can even delete it ,but then you can have problems opening that files or folders in your second OS. If you only have Seven ,feel free to remove it!
My System SpecsSystem Spec
28 Nov 2009   #9

Windows 7
 
 

Hi. I had the same problem, but not anymore

To remove this account from security do this:

Right click on the folder-> Properties-> Security -> Advanced -> Owner -> Edit -> Mark the username that you want to be the owner (your username) then tick the box "replace owner ...." -> Apply, OK.

Then you are the owner and you're abble to change the permissions and delete the Account Unkown S-1-5-21.....

Greetings and I'm waiting for answer...
My System SpecsSystem Spec
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 Unknown account appears in windows 7





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