Every Exchange version comes with its own Active Directory Schema updates, even Cumulative Updates come with Schema updates these days. To determin the version of the Schema when it comes to Exchange you can verify the rangeUpper property of the ms-Exch-Schema-Version-Pt object in the Schema Partition as shown in the following figure (for Exchange 2013 CU8).
You can also use the following PowerShell commands to retrieve the Schema version:
$root = [ADSI]"LDAP://RootDSE"
$m = [ADSI]("LDAP://" + "CN=ms-Exch-Schema-Version-Pt," + $root.schemaNamingContext)
$m.rangeUpper
The following table lists all (or most) Schema versions of Exchange Server:
| Exchange version | Schema version |
| Exchange 2007 RTM | 10637 |
| Exchange 2007 SP1 | 1116 |
| Exchange 2007 SP2 | 14622 |
| Exchange 2007 SP3 | 14625 |
| Exchange 2010 RTM | 14622 |
| Exchange 2010 SP1 | 14726 |
| Exchange 2010 SP2 | 14732 |
| Exchange 2010 SP3 | 14734 |
| Exchange 2013 RTM | 15137 |
| Exchange 2013 CU1 | 15254 |
| Exchange 2013 CU2 | 15281 |
| Exchange 2013 CU3 | 15283 |
| Exchange 2013 SP1 | 15292 |
| Exchange 2013 CU5 | 15300 |
| Exchange 2013 CU6 | 15303 |
| Exchange 2013 CU7 | 15312 |
| Exchange 2013 CU8 | 15312 |
| Exchange 2013 CU9 | 15312 |
Page last modified: June 17, 2015
Jaap Wesselius 