Sometimes you need to have your Schema at a certain level of Windows or may even want to check that a Schema upgrade is successful. One way to do this is to use ADSI Edit and connect to the Schema contect. Looking at the properties of the Schema node we can see the objectVersion attribute of the Schema. For Windows 2008 R2 this is 47.

The objectVersion attribute has the values below for different levels of Schema upgrades.

Of course, there may be a level of risk in accessing objects with ADSI Edit so you want to query the schema version from a command prompt. To do so you can download the free AdFind tool from http://www.joeware.net/freetools/tools/adfind/index.htm and open up an administrative level command prompt (right click cmd.exe ad select “Run As Administrator”), change your path to where you have saved AdFind.exe to and then run the command

Adfind –schema –s base objectVersion