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Update Computer Account Group Membership without Rebooting

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Often times when working with SMS 2003 in advanced security mode the need arises to add computer objects to active directory groups. Normally for a computer account to become aware of the group membership change a reboot is required.  Often it is difficult to arrange for the scheduled downtime necessary to reboot a production server.

I've used the below procedure to update the computer's security token without rebooting.  This does take a bit of effort, but it doesn't involve rebooting your server.

  • Download the Klist utility. You'll need to install the .msi package and get klist.exe from the install directory.
  • Next you need to launch an interactive command prompt running as the system account

              Click Start -> Run ->  "AT <time> /i cmd.exe"  

  • (NOTE:   If you are trying to launch an interactive command prompt via a remote desktop session to your server you will need to be logged on to session 0 to see the command prompt.  You can do this by using the following command when connecting to the server.  "mstsc /console" )
  • When command prompt is launched.

               Run "klist purge"

  • Run Gpupdate /force

 

Your computer's security token should now be updated.

Comments

  • Anonymous
    January 30, 2008
    Often times when working with SMS 2003 in advanced security mode the need arises to add computer objects

  • Anonymous
    January 31, 2008
    Fantastic tip. Thank you very much! Vinicius Canto MVP Windows Server - Admin Frameworks Brazil

  • Anonymous
    February 04, 2008
    Hey, keep up the blog posts! Interesting stuff!

  • Anonymous
    March 18, 2010
    I was just trying to confirm security group membership (for computers) required a reboot.  Thanks for confirming and also for the workaround.

  • Anonymous
    September 20, 2012
    You could also use: klist –li 0x3e7 purge