You are unable to validate Windows Vista or Windows 7 with your Key Management Server (KMS) computer due to duplicate Client Machine IDs (CMID)
Method 1: Using Sysprep answer file from console
How to modify the Windows 7 Answer File Created with Ghost to include the option to copy the default
profile.
From the Ghost Console when you create the image and perform Sysprep
Step 1: Under task create new image create task
Step 2: Browse the machine and also browse where to save the image under clone tab
Step 3: Under sysprep tab put a check on use sysprep and also it will ask you for the answer file for
sysprep
Step 4: If you already have set up the answer file using WAIK then browse the .xml file else u can
customise the answer file
Note: Make sure that you dont leave any feilds blank on answer file
Method 2: Manual method of performing Sysprep
How to prevent Microsoft Sysprep from disabling the local administrator account on Windows 7
Step 1: Create a Image before performing the Sysprep manual to avoid failure on master machine
Step 2: Once you have a back up copy goto Local disc C:\ windows\System32\Sysprep.exe
Step 3: You will have a System preparation tool and itUse OOBE(Out of box experience)
Step 4: On the shut down option use shutdown and Check skip rearm
Step 5: Then click ok and once the machine shuts down, Use the boot disc to Create the image