Strange Permissions

[Guest]

I noticed that many of my folders on my PC has strange numeric permissions
like:
S-1-5-21-XXXXXXXXX-XXXXXXXXXX-XXXXXXXXX-XXXX
I don't have any users or groups by this name on my PC and I don't use any
networks.

It says that the permissions are been inhereted from the parent folder (E:\
for example). But when I look at the permissions in E:\ I can't see that user.

How can I remove it?
Should I remove it?

Thanks.

 

[karl levinson, mvp]

I noticed that many of my folders on my PC has strange numeric permissions
like:
S-1-5-21-XXXXXXXXX-XXXXXXXXXX-XXXXXXXXX-XXXX
I don't have any users or groups by this name on my PC and I don't use any
networks.

It says that the permissions are been inhereted from the parent folder
(E:\
for example). But when I look at the permissions in E:\ I can't see that
user.

How can I remove it?
Should I remove it?

That's the SID ID for a user. Windows is having trouble looking up the user
name connected with that SID. Perhaps it is a user that you have since
deleted? Or a user from an alternate or previously installed version of
Windows?

I don't think I'd worry too much about this. I doubt it is a security
problem. You can find additional information and other recommendations and
explanations here:

http://groups.google.com/groups?as_epq=s-1-5-21&as_ugroup=microsoft.public.*

 

[Guest]

Thanks, However,
1. I didn't have any previous installed version of windows, it was a clean
setup.
2. I never deleted any user from windows. I'm using the same user that I
made during the install.

Is it possible that it has something in common with Norton Protect in Recycle?
I have same type of folders there?

Thanks.

 

[Jim]

I noticed that many of my folders on my PC has strange numeric permissions
like:
S-1-5-21-XXXXXXXXX-XXXXXXXXXX-XXXXXXXXX-XXXX
I don't have any users or groups by this name on my PC and I don't use any
networks.

It says that the permissions are been inhereted from the parent folder
(E:\
for example). But when I look at the permissions in E:\ I can't see that
user.

How can I remove it?
Should I remove it?

Thanks.

These are security IDs. Usernames are merely aliases for such things. In
addition, there are some IDs which are not associated with any user.

You will find a description of security IDs in:

"Microsoft Windows Registry Guide" by Jerry Honeycutt

on pages 8-11.

S-1-5-21 is the start of domain IDs. Whether your system is a member of a
domanin or not, it is ill advised to delete any such ID.

Jim

 

[karl levinson, mvp]

Thanks, However,
1. I didn't have any previous installed version of windows, it was a clean
setup.
2. I never deleted any user from windows. I'm using the same user that I
made during the install.

Is it possible that it has something in common with Norton Protect in
Recycle?
I have same type of folders there?

Only if those products created user IDs.