"Windows can not install required files. the file may be corrupt or missing. Make sure all files required for installation are available & restart the installation.
Error code 0x80070570.
What did you mean by “trying to install on a system with windows 2008 R2 OS”? Did you want to install Windows Server 8 and Windows Server 2008 R2 as dual boot systems?
By the way, it seems that the ISO file you downloaded was corrupt, please try to download it again to see whether you get the same issue.
The problem was gone, once I downloaded the ISO for the second time, and did CRC check when creating the DVD image.
My server software is now installed.
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