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Article ID: 120000, created on Feb 6, 2014, last review on Jul 14, 2018

  • Applies to:
  • Plesk Automation 11.1
  • Plesk Automation 11.5


  1. How to downgrade Pem Agent service (install pem agent from PPA 11.1) on Windows Service Node in case failed PPA upgrade? Please see the following kb for more information about Linux servers: PPA upgrade fails to ping hosts.

  2. Version of Pleskd.exe is 5.5 on Windows Service Node, while Pleskd package on Management Node has version 5.4:

    # rpm -qa |grep pleskd


  1. Be sure that PEM service is stopped, you can execute the following command in command line:

    net stop PEM
  2. Backup key in registry: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\SWsoft

  3. Uninstall Pem agent via Add/Remove Windows Components

  4. Open 'C:\POA_Deploy' directory and execute 'install_win_sn.exe' file

  5. Choose 'Regular host' and input PPA management node panel's login and password like 'admin/setup'

  6. Select 'C:\POA_Deploy\15-host_initial_data.tgz.bz2' as Host-Initial-Data file

  7. Confirm installation

  8. Be sure that PEM service is started

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