recommended way for using hyper-v is : sysprep. you sysprep a VM before you deploy to production. I generally sysprep and shutdown a virtual machine. and i copy to new location and start it. when it starts sysprep wil create new sid. so same image with different SID. anyother way is not supported by microsoft. Thanks Uday Kiran, Senior Consultant Cyquent Technology Consultants, Dubai Please Mark as answer if it helps you

Dear all, I have a base image WS2008 R2 for Hyper-V guest Operationg System. I used that base image and join the computer to the domain for the WSUS, SCOM, and others. Anyway, I just check the SID and get a duplicate SID with computer that used a same base-image. Newsid tool is not work in WS2008 R2, any other tool to generete the SID? Thanks, Regads, Endrik

Dear Uday, the servers already join to the domain production. if I run sysprep, it will the make the computer unjoin.. regards, Endrik

yes, sysprep will disjoin and remove the server name too. it is actually risky. but you have to take it Thanks Uday Kiran, Senior Consultant Cyquent Technology Consultants, Dubai Please Mark as answer if it helps you

Hi, As mentioned that you need to run sysprep to resolve this issue. For more information regarding this issue, please refer to the following Microsoft TechNet blog: The Machine SID Duplication Myth (and Why Sysprep Matters) http://blogs.technet.com/b/markrussinovich/archive/2009/11/03/3291024.aspx Regards,Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hello, the only supported way to use clones is to prepare them with sysprep: http://support.microsoft.com/kb/314828 Not supported options for sysprep: http://support.microsoft.com/kb/828287 Known problems: http://support.microsoft.com/kb/200607/en-usBest regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.