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Knowledge Base

Sysprep fails to start the customization of Windows Vista/Windows Server 2008 and later virtual machines with the error: A fatal error occurred while trying to Sysprep the machine (1026639)

Last Updated: 4/14/2015Categories: TroubleshootingTotal Views: 71627Language:
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Symptoms

After configuring the Customization Specification option in vCenter Server and creating a virtual machine using a template on any version of Windows Vista/Windows Server 2008 and later, the Sysprep does not initialize after the Control + Alt + Del screen appears on the virtual machine.

You are trying to clone an existing virtual machine and guest operating system customization does not start.

Cause

This issue occurs if the Windows Software Licensing Rearm program has run more than three times in a single Windows Image. For more information, see the Microsoft Knowledge Base article 929828.

Note: The preceding link was correct as of April 14, 2015. If you find the link is broken, provide feedback and a VMware employee will update the link.

For example, assume that Sysprep is run on Virtual Machine-1 for three times (for any reason) and then you convert that Virtual Machine-1 to a Template-1 and deploy a Virtual Machine-2 from that template. In this case, Sysprep fails to work on Virtual Machine-2 and when you try to initialize the Sysprep manually.

Resolution

To resolve this issue, rebuild the template.

Related Information

To check the status of Windows rearm count, open Command prompt as an Administrator and run this command:

For Windows Server 2008 R2, Windows 7, Windows 8, Windows 8.1, and Windows 2012:

slmgr /dlv

For Windows Server 2008 non-R2/Windows Vista:

slmgr -dlv

You see an output similar to:

License Status: Initial Grace Period

Time remaining: 30 days

Remaining windows rearm count: 3

If the Rearm count is 0, Sysprep does not run.

For more information on Sysprep, see How Sysprep Works.

Note: The preceding link was correct as of September 11, 2013. If you find the link is broken, provide feedback and a VMware employee will update the link.

Sysprep による Windows Vista/Windows Server 2008 以降の仮想マシンのカスタマイズが次のエラーで失敗する：コンピュータの Sysprep を実行中に致命的なエラーが発生しました

Detectable by VMware SkylineTM

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Attachments

Additional Resources

KB
•
End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

KB
•
VMware vCenter Server 5.0 の CA 署名証明書を構成する (2015421)

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