This article describes how to upgrade Windows Vista to Windows 7 if you have Active Directory Lightweight Directory Services (AD LDS) installed.If you haveAD LDS is installed, this upgrade is blocked by a compatibility check and you will be unable to continue with the Windows upgrade.
To upgrade Windows Vista to Windows 7 if you have AD LDS installed, follow these steps:
Back up the content for all the AD LDS instances on the computer that you want to upgrade. To do this, use one of the following tools:
The personal backup system of an independent software vendor (ISV) application
For more information about how to use the Dsdbutil.exe tool to back up data in AD LDS instances, click the following link: