security tab only shows sid

I have a server that is running windows storage server 2008r2 that I am moving allot of data to.
I have two folders on the same drive, one called departments and the other is user.
Department has subfolder  for all departmental shared data and the users contain the users home folder. We turned off UAC which required a reboot, after the reboot user were able to access their home folders but no one could access any department shares. When I look at the security on all the share foldesr under department the security showed local Admin, Domain Admin and system, the entry for the groups was just a SID. I went thru all the shared folders and delete the SID entry and reassigned security for groups on all the shared folder. does anyone know why this happened, I still have allot of data to move and a lot more shared folders to create and this server will need to be rebooted when any updates are applied and I do not want to have this issue again. any help would be appreciated
jgajmaAsked:
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Frank McCourryV.P. Holland Computers, Inc.Commented:
Were there any changes to the group during this time.  This usually happens when the user or group have been renamed or re-created, causing the SID to change.
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jgajmaAuthor Commented:
no changes to the group, just a reboot
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David Johnson, CD, MVPOwnerCommented:
We turned off UAC which required a reboot, after the reboot user were able to access their home folders but no one could access any department shares. This was a mistake

How did you do the copy to the storage server? Is it also a member server of the domain? Are you logged in as a domain administrator?

You may have to start over and then do it correctly.. robocopy with the /sec parameter will copy the files and retain the file permissions.

Let us know how you are doing this now and perhaps we can find the error of your ways.
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Windows Server 2003

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