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  On a vanilla Windows Server 2008 R2 Datacenter edition I was installing the Hyper-V role and the installation process went successful without any errors or warnings. Though, I am aware there is a pre-requisite of the Intel-Virtualization Technology (VT) and Data Execution Prevention  (DEP) assuming both were enable in the BIOS. I started creating virtual machine in the Hyper-V Manager snap-in and went through the series of wizard. When I try to start the virtual machine I get the following error Issue: “The virtual machine could not be started because the hypervisor is not running” Resolution: After a lot of troubleshooting figured out that Data Execution Prevention option in the BIOS was not enable. Now I am slightly surprised why did the Hyper-V role installation completed successfully isn’t VT and DEP the pre-requisite of  the hyper-v role??? Anyways issue got resolved the moment DEP was enable in the BIOS. If you like this post please leave your ...

  After a long time I was actually doing some hands-on and damn the first problem that I encounter is a Microsoft  Windows 2008 Server R2 design constraint for DNS Service. Issue: When you try to install Active Directory (AD) with integrated DNS on a high-end server (64 Cores, 500 GB+ RAM etc.). After installing the AD and when you reboot the server the DNS service doesn’t start automatically. You keep on getting the following errors when you try to start the service manually it just wont START Note: Active Directory works like a charm. However, the DNS service doesn’t start and we all know AD without DNS is like a big Disaster! System Event Log: (Event id 7023) Log Name:      System Source:        Service Control Manager Event ID:      7023 Level:         Error Description: The DNS Server service terminated with the following ...