Go to C:\Windows\System32\Sysprep folder & edit Unattend.xml file & delete skiprearm=1.
Open Registrey Editor & Set GeneralizationState to 7 under HKEY_LOCAL_MACHINE\SYSTEM\Setup\Status\SysprepStatus\
Open Command Prompt as Adminitrator & run below commands,
msdtc -uninstall
msdtc -install
Open Registrey Editor & Set SkipRearm to 1 Under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform\
Renaming (or deleting) C:\Windows\System32\sysprep\Panther
Try to run Sysprep