Article ID: 111501, created on Jun 20, 2011, last review on Aug 12, 2014

  • Applies to:
  • Virtuozzo containers for Windows 4.6
  • Virtuozzo containers for Windows 4.0


After the installation of the VZU400044 update for Parallels Containers 4.0 for Windows or the VZU460014 update for Parallels Containers 4.6 for Windows, a new Microsoft KB2525694 update becomes available for installation on the physical server.

When the KB2525694 update is installed, and the server is rebooted, the Parallels Containers Management Service (vzsrv) does not start. Error messages like the examle below can be found in C:\vzlog\

{0000000000000000}; T=2011.06.17 20:38:26.078; A=VzKSAL; P=828.844; S=VzKSAL; F=ksalDB\update.cpp,CVZWinUp::GetInfoAboutUpdate,516; L=ERROR; R=ffff(65535); C=0(0); M=65535 [] Update KB2525694 is not compatible with Virtuozzo

NOTE: The problem is fixed in this Parallels Containers Update:
111505 VZU400045 update for Parallels Virtuozzo Containers 4.0


Uninstall KB2525694 and reboot the physical server.

If you are using your own WSUS server, remove the update from there as well.

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