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System stops responding or backup fails when running a Windows backup using the WBAdmin tool with Application Control or Change Control enabled
Technical Articles ID:   KB85667
Last Modified:  1/20/2016


McAfee Application Control (MAC) 6.2.x
McAfee Change Control (MCC) 6.1.x

Microsoft Windows 8, 7, Vista
Microsoft Windows Server 2012, 2008 R2, 2008


This article describes issues that you may encounter while performing a Windows backup using the WBAdmin tool with Application Control or Change Control enabled. The Windows backup operation is run through WBAdmin. WBAdmin (WBAdmin.exe) is a command-line utility built into the Windows versions listed in the Environment field of this article. The command is used to perform backups and restores of operating systems, drive volumes, files, folders, and applications from a command-line interface. WBAdmin is a disk based backup system.


Running a Windows system state backup using the WBAdmin tool may lead to either or both of the following issues:
  • Backup process gets stuck or system becomes unresponsive
  • Backup fails with error RPC server is unavailable


This issue is resolved in MAC/MCC and
Hotfixes are created to address specific issues and are not posted publicly, but are available by contacting Technical Support.

To contact Technical Support, log on to the ServicePortal and go to the Create a Service Request page at https://support.mcafee.com/ServicePortal/faces/serviceRequests/createSR:
  • If you are a registered user, type your User Id and Password, and then click Log In.
  • If you are not a registered user, click Register and complete the required fields. Your password and logon instructions will be emailed to you.


Backup fails with error "RPC server is unavailable"
Bypass WBengine.exe from process context file operations.
  • Standalone mode: Run the following command:
    sadmin attr add -p wbengine.exe
  • ePO managed mode: In the Application Control policy, select the Exceptions tab, and add an exception with the process name wbengine.exe to exclude from process context file operations.

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