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Why do I get the error message 'VIRTUAL_MACHINE_NOT_ALLOWED' when using CmActLicense and Hyper V?

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More recent Windows server systems, e.g. Windows Server 2008, can use the virtual environment "Hyper-V". If you use Hyper-V, this error may occur, as Hyper V inserts itself between the host system and the hardware, and thus the host system is detected as a virtual machine (VM).

For security reasons CmActLicense was not configured for use in Hyper-V environments up to CodeMeter version 5.00c. This has to be featured separately by the Independent Software Vendor (ISV).

For more information, please go to http://de.wikipedia.org/wiki/Hyper-V.