NET FRAMEWORK >unkown account?

hi, I recently came across an account in the Net Framework part of Windows, titled as ''Account Unknown (S-1-18]''(<--something like this), this was however while I was in safe mode. Im not sure if this should be there or i should be worried? A

Would really like any info on Windows NET FRAMEWORK, and what accounts should be running.

Thanks for any advice,

T

 

hi again, i recently just found this link-->

http://www.mcse.ms/message1190269.html

Other known, unknown accounts:
S-1-5-32-549 = Server Operators S-1-5-32-550 = Printer Operators

In this link it describes two uknown accounts. The account i have is the server one. Does anyone knowif this is normal on WinXP Home Edition. T

 

Turns out that this is normal. This is some of the info i have found.

Well-Known Security Identifiers

A security identifier (SID) is a unique value of variable length that is used to identify a security principal or security group in Microsoft® Windows® 2000 and Microsoft® Windows NT®. Well-known SIDs are a group of SIDs that identify generic users or generic groups. Their values remain constant. Table E.1 is a list of all SIDs in this category.

The Unknown Account i had was the following>

S-1-5-32-547/549 Power Users A built-in group. By default, the group has no members. This group does not exist on domain controllers.

T