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KCS Backup always fails to execute a backup task on a Windows Server 2012 R2

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Issue

  • I installed KCS Backup on a fresh Windows 2012 R2 machine, but when I create a new Backup task, it will always fail.
  • The Trace file C:\TCOSS\Trace\KCSBackupSrv.log file shows following trace output:

2014-09-15 13:49:59,859 DEBUG [Thread=Worker] [KCSBackupSrv] Init complete
2014-09-15 13:49:59,939 ERROR [Thread=Worker] [KCSBackupSrv] KCSObjectsBackupMgr.ctor:Object reference not set to an instance of an object.

  • Increasing the tracelevel in C:\TOPCALL\KCSBackup\KCSBackupSrv.log4net.config to e.g. DEBUG does not give any more information.
  • What is the reason for this problem and can it be solved somehow?

Cause

The problem is caused by a known bug

Bug 564003:

KCSBackup: NullPointerException while retrieving Win32_Registry WMI class

Solution

 

You can use the following workaround to solve the problem:

  • Copy the attached WMIReadValues.vbs and WMICorrectValues.vbs to any local folder on the machine where KCSBackup is installed
  • Login with a local Administrator user
  • Right-click the start button and select the menu option Command Prompt (Admin)
  • Within this command prompt window nagivate with the cd command to the folder, where the these two vbs files are located Within this command prompt window execute the command: cscript WMIReadValues.vbs
  • Check the values reported after MaximumSize and ProposedSize. If MaximumSize is empty and ProposedSize is 0 as shown below, it is most likely the reason for the problem with KCSBackup.
    Microsoft (R) Windows Script Host Version 5.8
    Copyright (C) Microsoft Corporation. All rights reserved.
    Caption: Registry
    CurrentSize: 102
    MaximumSize:
    ProposedSize: 0
    Status: OK
  • In this case execute the following command: cscript WMICorrectValues.vbs
  • Both values "MaximumSize" and "ProposedSize" should now show a value of 2048 as shown below:
    Microsoft (R) Windows Script Host Version 5.8
    Copyright (C) Microsoft Corporation. All rights reserved.
    Caption: Registry
    CurrentSize: 109
    MaximumSize: 2048
    ProposedSize: 2048
    Status: OK

Afterwards it is recommended to reboot the whole machine and check then to create a backup task with KCSBackup.

 

Level of Complexity 

Moderate

 

Applies to  

Product Version Build Environment Hardware
KCS Backup     (tested with KCS Backup from KCS 10.0, because this is the first KCS Version supporting Windows Server 2012 R2  

References

Keywords: KCS Backup, Object reference not set to an instance of an object, Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt. 

 

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