Unknown User after reinstall

I recently archived and installed OSX Leopard and pulled my accounts and apps back in. Now I notice there is an "Unknown" user account on the system and I can't delete it when running as admin. I am thinking of nuking and paving the hard drive with a clean install of Leopard and then use migration assistant to migrate just the apps.
If I understand correctly, I need to create a new admin account, a new limited account (if desired) and migrate the apps over to the new OS. This get rid of any suspicious accounts; am I correct?

..."Frankly, I don't think any Finder version has been very good at manipulating or displaying permissions info."...
Permissions are another facet, but distinct from owner and group. Apart from the fact that the "Enclosed Items" aspect could be problematic, and the same bad terminology "(unknown)" was used, I find it hard to find fault with earlier "Get Info" versions when it came to basic owner / group settings on individual items. It was possible to change owner or group by choosing from a list any that were configured on the system (the list contained them all), or configure the "Finder" so that you could manually type a numerical value for those that weren't. With respect to owner / group settings for an individual item, I can't think of anything that you could do from the command line that you couldn't do from "Get Info".
Compare this to Leopard's where the list doesn't even include all users / groups (eg. try to manually set a system file to "root:wheel" from Leopard's "Get Info"), and as far as I know, there is no way to input values manually. Plus the almost complete inability to change the "group" at all.
In previous OS X versions, the "solution" to the questions posed in this thread would likely have been a simple case of telling the poster to "use Get Info, authenticating if necessary, to change the owner and group from '(unknown)' to something else".
Leopard's implementation is inadequate, not by any unreasonably high standards that I might have, but even in comparison to the capabilities of Apple's own previous versions. It can't be viewed as anything other than a functional downgrade which users have arbitrarily been subjected to.

Similar Messages

TACACS "fail unknown users" after upgrade to ACS 3.3

Basic config issue is :
1) User Account is added to ACS 3.3
2) User Account is added to Group with correct Privilege Levels
3) User Password Authentication: is listed as "Windows Database"
4) TACACS+ Enable Control: is set to user group settings
5) And TACACS+ Enable is also set to "Windows Database"
In External DB all windows Domains are listed (but not down to specific group mapping)
Here is the problem, every thing works fine.
Users can log onto router in User mode (using domain password) & change to EN mode (using domain password)
As long as the "Unknown user policy" is set to check against "Windows". this works.
But if it is set to "fail Unknown users" then no one can gain access

Hi Michael,
We opened a TAC case ans was given the following info;
CSCef84196
First Found-in Version 3.3(1)
Symptom:
users created on acs but mapped to external DB manually fail authentication
Condition:
-this happens when unkown user policy is set to fail authentication attempt.
Workaround:
- set unkown policy to check external database.
if dynamic users aren't desired to authenticate, you can map the external DB to a disabled group.
and put the manually mapped users in an enabled group.
Ther is no fix available yet!

A different way to deal with "unknown" user after upgrade from Tiger.

It's a known issue that doing upgrade and install or archive and install from Tiger to Leopard, produces a lot of folders with "unknown" group in their "get info" panel. This has to do with a different group structure in Tiger and Leopard.
In Tiger, every user has their own private group with the same name as the username. That group is set to be user's primary group.
In leopard, every new user with an account is a member of the group staff (gid=20) which is not present in Tiger. Leopard doesn't fully understand Tiger's private group structure, hence the "unknown" group. This causes various problems such as Finder crashes when trying to change the permissions and ownership in the get info window.
Apple's proposed way of dealing with this is described [here|http://docs.info.apple.com/article.html?artnum=307128].
However, this method doesn't change the existing group structure and doesn't resolve all the problems.
I'd like to suggest a different way of dealing with it.
1. create a new admin user (if you don't have one already), log out of your primary account and log into the new one.
2. enter the following in terminal:
*sudo dscl . delete /users/"username"*
where username is the short name of the user on the main account (not the one you are currently logged into).
This will delete that user.
3. Log out/in.
4. go to system preferences->accounts and create a new user with the name and short name exactly as the one you've deleted in step 2.
You'll be get a popup saying that a home directory by this name already exists and asking if you want to use it. Say "Yes".
That's it. Your main user will be recreated using the native group structure of Leopard with gid=20(staff). Permissions on your home directory will be reset with correct group and ownership.
I tested the process on my powerbook after an upgrade and install from Tiger to leopard and it worked without a hitch.
I like this method better than Apple's because it completely gets rid of Tiger's group structure which was creating all the confusion. The only downside as far as I can see is that you might have to manually change the group ownership on some files belonging to the main user that sit outside your home directory.
I would appreciate any comments on this.

hmm, I confess, I did this before installing 10.5.2 so i can't say for sure. However, I've dealt with a few people (see e.g. this [thread|http://discussions.apple.com/thread.jspa?messageID=7012957]) who are running 10.5.2 and still have this issue. I don't know what if anything 10.5.2 did about this but I'm quite sure that it didn't change the group structure inherited from Tiger.
Message was edited by: V.K.

Unity Connection 8.5 not import CUCM end users after reinstall

I needed to reinstall a Unity Connection 8.5 server (server crash due to power failure).
After the reinstallation and reconfiguration of the CUC, the same does not synchronize and / or import users from CUCM (version 8.5).
The CUCM is integrated with LDAP.
The version of servers are:
- CUC = version 8.5.1ES16.11900-16
- CUCM = version 8.5.1.11900-21
Before CUC crash, I could import users usually.
The test in AXL servers in CUC is normal: (Test message successfully sent to AXL server 172.16.21.11:443).
Any sugestions?
Regards,
Ronaldo Gama

Hi Ronaldo,
This is because the CUCM actually holds a database where all of these users are still tagged as being imported into UC already. You'll have to get fancy with some SQL queries, you can try these, but do it at your own risk.
Open SSH to the CUCM
1) For each user, find the mapping row:
          run sql select pkid from enduserappservermap where fkenduser in (select pkid from enduser where userid = 'my_user_alias') and fkappserver in (select pkid from appserver where ipaddr = 'my_connection_server_ip')
In the query above, replace my_user_alias with the alias of the end user and replace my_connection_server_ip with the IP address of the Connection server (or whatever the old Connection server IP address may have been if you changed it after the rebuild).
2) Delete the mapping row:
You should only get back one row. Delete it. Replace my_pkid with the actual pkid that you got back:
          run sql delete from enduserappservermap where pkid = 'my_pkid'
Try to import that user again via AXL. That's the user by user way of doing it if you don't have too many, but if you're confident they all can be deleted at once you can do the following:
1. Find all of the users mapped
           run sql select * from enduserappservermap
2. The users should all have matching value in the "fkappserver" object ID column if they were mapped to the same pre-existing Connection server. Once you've confirmed the "fkappserver" object ID of the old UC server, issue the bulk delete command, this is irreversible!
          run sql delete from enduserappservermap where fkappserver = 'fkappserver_for_old_UC'
Hope that helps,
Brad

After deleting user account / Unknown user is shown in information ...

After having some troubles with my account, I tried to get rid of it by deleting this account.
So I first edited a new one and after all I removed the old one.
Since this moment I have an UNKNOWN USER without having read/write-priviliges to my disk.
Unfortunately this user is not removable.
Does someone having this problem too?
Some hints about this matter?
Message was edited by: 3lm0

Exactly what did you do to remove your old account? I hope you didn't just drag it to the Trash. If so then you don't have an account because dragging the old Home folder to the Trash is not how you remove an account.
You say you "edited" a new account. How did you do this?

Troubleshooting after reinstalling the software that came with my macbook

Hi, I'm a new user of mac products and my macbook crashed refusing to start up (it would just turn on and keep loading till froze).
I followed exactly the steps "Problem meet solution" in the little manual and had to use the Mac OS X Install Disk 1.
The disk utility repaired the HD volume (error found: incorrect block count for file flatfile.db - should have been 708 instead of 354), then still couldn't start up on HD. Did it all over again, repaired HD again (this time error: incorrect block count for file .store.db - should have been 5202 instead of 2601), but this time went further selecting "continue" and reinstalling Mac OS X from the discs that came with my macbook. Reinstalled - successfully finally - by chosing the option "previous settings archived in new file".
The only problem i had was at login ... it would not recognize my user password... which was the same one since i first turn on my new bought macbook. Anyways, i used again the disc 1, selected change my password and this time i managed to sign in with the new one (same old user).
1)NOW, question: do i have to re-update my software? Because before I had Mac OS X 10.5.2 (i always kept my computer up to date) and now, after reinstalling the software I have Mac OS X 10.5
or i should be able to reactivate them from the Previous Systems file (in this case how do i do that?
2) Can't figure still out my master password that unlocks the file vault plus i can't activate again the root admin user from Directory Utility ... i click it but doesn't do anything. Why is this and how can be sorted out?
my macbook details:
Model Name: MacBook
Model Identifier: MacBook3,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.2 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 4 MB
Memory: 1 GB
Bus Speed: 800 MHz
Boot ROM Version: MB31.008E.B02
SMC Version: 1.24f2
Could someone help me with this? Please note it's my first time troubleshooting a computer ever and that my knowledge is not that vast in the field ... so please use simple steps/terms that i can follow.
Thank you,
Laurie

Thank you very much for answering so prompt to my questions.
1) yes, i will take all the updates. and ok, i won't touch the previous systems file
2) in regards to master password ... i tried all the passwords i ever used. not sure it's just "forgetting". Reason: as I mentioned before: The only problem i had after reinstalling the software was at login ... it would not recognize my user password... (and I add, nor the master password) which was the same one since i first turn on my new bought macbook.
As i couldn't sign in, used again the disc 1 to reset my administrator password and it did save but with the notice that i should "use the keychain access to reset the password for users login" .This time i managed to sign in with the new one (same old user). Then I went to the keychain clicked login and changed the password for keychain login. Did i do good? do I have to change something else. please let me know as don't really know.... i just follow help advice.
3)in regards to root password ... i had it also before ... using help on "security" issue ... as i connect to different networks ... i read that one could help ... please understand that i'm learning as i go, as this time i don't have someone else to do those things for me. so why doesn't it activate anymore? and why would it be better not to activate it?
4)speaking of learning, from my initial post where i posted the errors that my disk utility found ... what do u think caused my computer to freeze? i was browsing on safari facebook as well as I had both yahoo messenger and skype opened... first the messenger froze, then crushed, then i restarted it , then froze, then all the rest froze, without responding to force quit.
5) after reinstalling the software, i still have yahoo messenger and other applications.... is that safe to use now? they are still in my applications
and last 6) did I do everything correct when my computer would not start up?
thank you
laurie

How do I remove (unknown) user in permissions & sharing, please?

I re-installed OS X with archive install. I am reinstalling preferences, etc... using Time Machine and my archived Previous System folder. However, many folders are marked and I have an (unknown) user with Read&Write Priveleges in Sharing & Permissions for files within 'Previous System' folders. I am unable to remove (unknown) with - and I have no option for setting 'No Access' to this user.
How do I remove (unknown) user with Read&Write Priveleges in Permissions?
Using Terminal, I have ascertained that my uid=501
Macintosh:~ symone$ ls -ladeO /Previous\ Systems.localized/Previous\ System\ 1/Users/symone/Library/Audio
drwx------+ 5 502 staff - 170 8 Sep 2011 /Previous Systems.localized/Previous System 1/Users/symone/Library/Audio
0: group:everyone deny delete
Macintosh:~ symone$ id
uid=501(symone) gid=501(symone) groups=501(symone),98(_lpadmin),81(_appserveradm),79(_appserverusr),80(admin)

Hmmm, doesn't sound good for your drive.
Check the S.M.A.R.T. status of the drive in Disk Utilty by highlighting the Drive & looking at the bottom of the window.
Could be many things, we should start with this...
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair Disk, (not Repair Permissions). Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.

Error: sql.SQLError: [-4008] (at 1) Unknown user name/password combination

Hello Experts,
After a Test refresh for SCM system, we restored Livecache. The database has been changed and starts using database manager, during registration (Register LCApps) it gives the following error:
Logical Command: DBMRFC
Parameter: exec_lcinit register
Name and Server     : LCQ - dusepierp12
DBMRFC Function     : DBM_EXECUTE
Command             : exec_lcinit register
Error               : DBM Error
Return Code         :     -24964
Error Message       : ERR_EXECUTE: error in program execution#
0,sap\lcinit LCQ register -uDBM , -uDBA , -uSQL ,
liveCache LCQ (register)
The liveCache state is ONLINE
DBMServer 7.6.04   Build 009-123-182-193
Creating liveCache application procedures
ERROR : liveCache LCQ not registered (see "s:\sapdb\data\wrk\LCQ\lcinit.log").
START *****************************
liveCache LCQ (register)
Thu 07/30/2009
10:26 PM
installation path = S:\sapdb\LCQ\db
OK
DBMServer 7.6.04   Build 009-123-182-193
Creating liveCache application procedures
ERR
-24964,ERR_EXECUTE: error in program execution
1,""S:\sapdb\LCQ\db\bin\x_python" "S:\sapdb\LCQ\db\env\lapps.py" -R "S:\sapdb\LCQ\db" -d LCQ -u DBADMIN,*"
Traceback----
Error----
sql.SQLError: [-4008] (at 1) Unknown user name/password combination
Traceback (most recent call last):
File "S:\sapdb\LCQ\db\env\lapps.py", line 38, in ?
    connectAndInstall (install, install.__doc__)
File "S:\sapdb\LCQ\db\env\installib.py", line 398, in connectAndInstall
    session = connect (options)
File "S:\sapdb\LCQ\db\env\installib.py", line 350, in connect
    alterUserNotExclusive(options)
File "S:\sapdb\LCQ\db\env\installib.py", line 338, in alterUserNotExclusive
    session.release()
AttributeError: 'NoneType' object has no attribute 'release'
ERROR : liveCache LCQ not registered
Thu 07/30/2009
10:26 PM
END ******************************
Many Thanks,
TIA,
Nisch

Nischal Mahakal wrote:>
> Hello Experts,
>
> After a Test refresh for SCM system, we restored Livecache. The database has been changed and starts using database manager, during registration (Register LCApps) it gives the following error:
> -24964,ERR_EXECUTE: error in program execution
> 1,""S:\sapdb\LCQ\db\bin\x_python" "S:\sapdb\LCQ\db\env\lapps.py" -R "S:\sapdb\LCQ\db" -d LCQ -u DBADMIN,*"
> -
Traceback----
Hi there,
looks like you entered "DBADMIN" when you created the liveCache instance in DBMGUI as the DBM Operator.
For SAP installations, this user is always named "CONTROL".
So, drop the instance again, recreate it with "CONTROL" and re-do the recovery of the liveCache backup.
regards,
Lars

Unknown User Error Message, Do I have a Virus?

Today I checked my AOL email and had over 40 messages in my inbox all within a very short time frame. I recognize most of the email addresses that came back with the Unknown User messages. I did not send any emails out and there is no record in my sent box that says that I send those emails. Could I have a Virus? I always thought mac computers don't get viruses. I am concern that I have one and if I do what should I do. I did change my password to my email after it happen. Here is a copy of one of the email error messages that I got. For the protection of my friends email and mine I changed it in this copy of the email. Friends email- [email protected], My email- [email protected]. I also got one additional email that was sent to me, from me that I never sent. Again no email in my sent box and of course I did not click on the link that was in that email. I will also post that email but will change only my email. Please do not click on the link since I am thinking it might be a virus but I wanted to include it, hoping it will help. Thank you in advance for your help.
ERROR MESSAGE:
* ATTENTION *
Your e-mail is being returned to you because there was a problem with its
delivery. The address which was undeliverable is listed in the section
labeled: "----- The following addresses had permanent fatal errors -----".
The reason your mail is being returned to you is listed in the section
labeled: "----- Transcript of Session Follows -----".
The line beginning with "<<<" describes the specific reason your e-mail could
not be delivered. The next line contains a second error message which is a
general translation for other e-mail servers.
Please direct further questions regarding this message to the e-mail
administrator or Postmaster at that destination.
--AOL Postmaster
----- The following addresses had permanent fatal errors -----
<[email protected]>
(reason: 550 5.0.0 <[email protected]>... User unknown)
----- Transcript of session follows -----
... while talking to mx1.webexone.com.:
DATA
<<< 550 5.0.0 <[email protected]>... User unknown
550 5.1.1 <[email protected]>... User unknown
<<< 503 5.0.0 Need RCPT (recipient)
Final-Recipient: RFC822; [email protected]
Action: failed
Status: 5.0.0
Remote-MTA: DNS; mx1.webexone.com
Diagnostic-Code: SMTP; 550 5.0.0 <[email protected]>... User unknown
Last-Attempt-Date: Thu, 7 Oct 2010 18:27:52 -0400
Return-Path: <[email protected]>
Received: from imo-ma04.mx.aol.com (imo-ma04.mx.aol.com [64.12.78.139])
by imr-da06.mx.aol.com (8.14.1/8.14.1) with ESMTP id o97MRjkm008439
for <[email protected]>; Thu, 7 Oct 2010 18:27:45 -0400
Received: from [email protected]
by imo-ma04.mx.aol.com (mailoutv42.9.) id z.ee2.72ae6c8 (43849)
for <[email protected]>; Thu, 7 Oct 2010 18:27:41 -0400 (EDT)
Received: from smtprly-mc01.mx.aol.com (smtprly-mc01.mx.aol.com [64.12.95.97]) by cia-dc04.mx.aol.com (v129.4) with ESMTP id MAILCIADC046-d3c94cae49563c4; Thu, 07 Oct 2010 18:27:37 -0400
Received: from webmail-d010 (webmail-d010.sim.aol.com [205.188.181.34]) by smtprly-mc01.mx.aol.com (v129.4) with ESMTP id MAILSMTPRLYMC013-d3c94cae49563c4; Thu, 07 Oct 2010 18:27:34 -0400
To: [email protected]
Content-Transfer-Encoding: quoted-printable
Subject:
Date: Thu, 07 Oct 2010 18:27:34 -0400
X-MB-Message-Source: WebUI
X-AOL-IP: 41.215.217.83
X-MB-Message-Type: User
MIME-Version: 1.0
From: [email protected]
Content-Type: text/plain; charset="us-ascii"; format=flowed
X-Mailer: AOL Webmail 32761-PHONE
Received: from 41.215.217.83 by webmail-d010.sysops.aol.com (205.188.181.34) with HTTP (WebMailUI); Thu, 07 Oct 2010 18:27:34 -0400
Message-Id: <[email protected]>
X-Spam-Flag:NO
X-AOL-SENDER: [email protected]
The email that I got that was from me, to me. Again do not open the link, I would feel horrible if caused anyones computer harm, again I also changed my email address for the posting.
hi! Jen!http://made-of.fr/to.php Best regards, ,[email protected]

The emails are almost certainly coming from someone else's computer, not from your account. This will be definite if you can't see any of these emails in any of your "sent mail" folders and only are finding out about it by mail bouncing back or someone telling you that they've received such an email from your email address.
This type of infection, which exclusively infests Windows systems, uses a technique known as "spoofing," (mentioned by the other posters) by which the virus or worm randomly selects an email address it finds on an infected computer. The virus/worm uses this address as the "From" address when it performs its mass-mailing routine rather than using the real email address of the user of the infected system. If your address happens to be the one randomly chosen, then anyone receiving one of these emails sees your email address as the apparent sender. In addition, if any messages bounce back (either because the address is no longer valid or the mail server finds the virus and rejects the message), you get hit with the bounce rather than the actual (unknowing) sender, even though the messages didn't come from your system and may be from addresses you've never heard of.
Here's an example; Jane is using a computer infected with a Windows email virus or worm. Jane is either not using an antivirus program or does not have current virus definitions. When the virus/worm activates and runs, it randomly searches the Windows address book and finds the email address of Bill. The worm inserts Bill's email address into the "From" portion of an infected message, which it then sends to Janet. Janet then contacts Bill and complains that he sent her an infected message. When Bill scans his computer, the virus checker does not find anything, because his computer is not infected.
There's nothing you can do if, as appears to be the case, the emails aren't coming from you. All you can do is notify all your friends and colleagues who have Windows systems and who would know your email address and get them to update their antivirus protection.
Regards.

IPhoto Library won't load after reinstalling Mac OSX

I have reinstalled mac i was having some problems and i am a newbie in mac so i tought a clean install would be good at that point
After reinstalling i had my user folder backed up i moved the files back to their original place, and organized everything because it was messy, and then started a timemachine backup on an external drive
so in short:
i reinstalled mac
restored my iPhoto Library to the Pictures folder
Updated everything to the latest version ( since the photo library was created with the latest version )
when i tried to open iphoto it stayed reloading for an hour then i gave up and searched online
my pictures are all there i can copy them and start a new library but that is not what i want
i want my events as i sorted them i want my faces as i sorted them i spent a lot of time making these pictures as they were
please help
Things i already tried:
vacuuming the *.db sqlite files
removing the faces.db so that if the faces are the problem i would know
tried removing all *.db files
tried to import my photos to a new library but that is not what i want
right now i have 2 libraries, a new one wih ****** event names
and the old one that is corrupt

Using your original library try the following: make a temporary, duplicate copy of the library and try the three fixes below in order as needed:
Fix #1
Delete the iPhoto preference file, com.apple.iPhoto.plist, that resides in your Home/Library/Preferences folder, launch iPhoto and try again.
NOTE: If you're moved your library from its default location in your Home/Pictures folder you will have to point iPhoto to its new location when you next open iPhoto by holding the the Option key. You'll also have to reset the iPhoto's various preferences.
Fix #2
Launch iPhoto with the Command+Option keys depressed and follow the instructions to rebuild the library.
Select the options identified in the screenshot.
Fix #3
Using iPhoto Library Manager to Rebuild Your iPhoto Library
Download iPhoto Library Manager and launch.
Click on the Add Library button, navigate to your Home/Pictures folder and select your iPhoto Library folder.
Now that the library is listed in the left hand pane of iPLM, click on your library and go to the File ➙ Rebuild Library menu option
In the next window name the new library and select the location you want it to be placed.
Click on the Create button.
Note: This creates a new library based on the LIbraryData.xml file in the library and will recover Events, Albums, keywords, titles and comments but not books, calendars or slideshows. The original library will be left untouched for further attempts at fixing the problem or in case the rebuilt library is not satisfactory.
OT

My itunes won't launch even after reinstalling. Looked in itunes folder and somehow lost itunes library? HELP!

My itunes won't launch even after reinstalling. Looked in itunes folder and somehow lost itunes library? HELP!

The first thing I'd suggest is to get a good antispyware checker and give it a go at your system. Some recent spyware has been reported by other users to shut down iTunes or prevent it from launching. From user reports, Ewido seems to be the best at catching it. You can download a free version of Ewido here.
If that doesn't cure the problem, try deleting the iTunes preference files:
C:\Documents and Settings\<username>\Application Data\Apple Computer\iTunes\iTunes.pref
and
C:\Documents and Settings\<username>\Local Data\Application Data\Apple Computer\iTunes\iTunes.pref
You might have to turn on "show hidden files" to find them. (Right click "my computer", select open, select Tools menu -> Folder Options. Select View tab, "show hidden files" radio button is in the center scrolling panel.) Delete them or if you want to be able to put them back if it doesn't help, drag them to some other location. This will force iTunes to run the setup assistant the next time you launch iTunes. Note that you'll have to go back and set any preferences you've changed from the default.
If that still doesn't work, try this:
Bugie: Perform a Thorough & Complete Uninstall and Reinstall of iTunes/QuickTime.
Hope this helps.

Unknown user

Hi everybody
after upgrade my os x to 10.5 I had problem with the "unknown" user. I had resolve my problem temporary with this article http://docs.info.apple.com/article.html?artnum=307128.
When I had resolve the problem I had remove the group from all my hd and than with the command "dscl . delete" I had removed the groups and users. At now if I do the command: dscl . list on terminal I don't have any more the group and user unknown.
But on my external hd(on macintosh hd I don't have this problem) when I create a new file or directory the user unknown come back!
I have the same problem if I attach any hd on my computer and make an partition with Mac OS file system.
there is other that I can do for delete the unknown user definitly?
there is another question: why when I create a group on terminal with that command: sudo dscl . create /Groups/"group_name" why can't I find under user and groups?
many thanks

Hi-
You would be much better off to place your post in the Leopard Forum.
This is a forum specifically for "Feedback about Discussions"- questions or comments regarding the entire Apple Discussions forum (or part of) only.

Unknown User Permissions - Erase and Install Backup Plan

Hi everyone,
I upgraded from Tiger and therefore have the unknown user permissions problems. I'd like to erase and install my system and am writing to verify the following:
If I copy my data (with the funny permissions) to a Powerbook in Firewire Disk Mode, reinstall Leopard on my new iMac, then copy the data back from the Powerbook in disk target mode, will the permissions be fixed?
Thank you, Tom Bertram.

Thomas,
If you are talking about the "unknown" group problem seen in the permissions portion of Get Info, be aware that Apple is in the process of putting out a Knowledge Base article to address this and it may be wise to be patient a little longer.
The user accounts inherited from Tiger belong to a "group" that has a missing piece of information -- a group name that Leopard wants. The installer should have dealt with this but it didn't. Anyway, a couple of simple Terminal commands can fix this for each such account. Once the Group description is proper, there will no longer be any need to change the group membership of your files.
Unfortunately the first couple tries Apple made of describing how to do this appear to be in error. See the following thread:
http://discussions.apple.com/thread.jspa?threadID=1280472&tstart=0
The correct commands should be posted by Apple shortly and then you can resolve this without having to do a whole re-install.
--Bob

Unknown User Unhandled Exception

Hi all
Any idea how to solve this unknown user error after Screen Locking Time?
Kedalene

HI Kedalene,
Workaround for this jst restart your system and then run SAP as "Run as Administrator"
the same had also occured to me and i do follow above steps to resolve.
Regards,
Bhushan Verma

Unknown User account appears on login page

Hi,
Recently on my Login Page an unknown user has appeared on my computer. When I go to administer accounts the unknown user does not appear.
It has it's own avatar too...a human shadow with outer space in back of it.
I recently set up a myspace.com account, but that should not have done it.
I cannot get this thing off my computer and I fear I am being hacked.
Can anyone help me get rid of this thing and/or explain to me what it is?
Thanks, RWard

Gill
Welcome to Apple Discussions!!
I went to the link you noted but was unable to find 'security' in the linkTrue, all it says there is
The root user should only be used for specific administration or monitoring tasks. After completing a task as the root user, log out of Mac OS X and log back in using a normal or administrator user account.
Disable root access if you do not use it often.However, if anyone does manage to hack into your machine, he can do more damage if there is an enabled root account (he still has to guess the password of course). If root is disabled, that's another barrier.
If you are really interested, see Mac OS X: Security, and this PDF document: Security in Mac OS X

Unknown User after reinstall

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