Active Directory and Exchange Schema Version

Active Directory (Forest Prep) Schema Versions:

Windows Server	objectVersion
Windows Server 2019	88
Windows Server 2016	87
Windows Server 2016 Technical Preview Schema	81
Windows Server 2012 R2 Schema	69
Windows Server 2012 Schema	56
Windows Server 8 BETA Schema	52
Windows Server 8 Developer Preview Schema	51
Windows 2008 R2 Schema	47
Windows 2008 Schema	44
Windows 2008 BETA Schema	39
Windows 2003 R2 Schema	31
Windows 2003 Schema	30
Windows 2000 Schema	13

How to find Active directory Schema

Using “ADSIEdit.msc” or/and “LDP.exe” tools:Navigate to:”CN=Schema,CN=Configuration,DC=domain,DC=local“and review the current “objectVersion” attribute.

Using “DSQuery” command line:”dsquery * cn=schema,cn=configuration,dc=domainname,dc=local -scope base -attr objectVersion“The following information provides a mapping between the “objectVersion” attribute value, to

Using PowerShell

================
ACTIVE DIRECTORY
================

using the Active Directory Cmdlets:

import-module ActiveDirectory
$ADForestConfigurationDN = ((Get-ADForest).PartitionsContainer) -Replace(‘CN=Partitions,’)
$ADSchemaInfo = Get-ADObject “cn=schema,$ADForestConfigurationDN” -properties objectversion
$ADSchemaVersion = $ADSchemaInfo.objectversion
Write-Output “The current AD Schema Version is $RootDSEADObjectVersion which is $ADSchemaVersionName `r ”
Write-Output ” `r “

Regedit

Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\NTDS\Parameters

Exchange Schema Versions

What is Exchange Schema

Exchange Schema version or Exchange Active Directory versions , The tables in the following sections contain the Exchange objects in Active Directory that are updated each time you install a new version of Exchange (a new installation or a CU). There are three very important parameters of the Exchange Schema: rangeUpper, objectVersion (Default), objectVersion (Configuration).

• rangeUpper is located in the Schema naming context in the properties of the ms-Exch-Schema-Version-Pt container.
• objectVersion (Default) is the objectVersion attribute located in the Default naming context in the properties of the Microsoft Exchange System Objects container.
• objectVersion (Configuration) is the objectVersion attribute located in the Configuration naming context in Services > Microsoft Exchange in the properties of the <Your Exchange Organization Name> container.

Exchange 2016 Schema Active Directory versions (Forest Prep)

When you run prepare schema and PrepareAD

<Virtual DVD drive letter>:\Setup.exe /IAcceptExchangeServerLicenseTerms /PrepareSchema

Exchange 2016 version	rangeUpper	objectVersion (Default)	objectVersion (Configuration)
Exchange 2016 CU20	15333	13240	16220
Exchange 2016 CU19	15333	13239	16219
Exchange 2016 CU18	15332	13238	16218
Exchange 2016 CU17	15332	13237	16217
Exchange 2016 CU16	15332	13237	16217
Exchange 2016 CU15	15332	13237	16217
Exchange 2016 CU14	15332	13237	16217
Exchange 2016 CU13	15332	13237	16217
Exchange 2016 CU12	15332	13236	16215
Exchange 2016 CU11	15332	13236	16214
Exchange 2016 CU10	15332	13236	16213
Exchange 2016 CU9	15332	13236	16213
Exchange 2016 CU8	15332	13236	16213
Exchange 2016 CU7	15332	13236	16213
Exchange 2016 CU6	15330	13236	16213
Exchange 2016 CU5	15326	13236	16213
Exchange 2016 CU4	15326	13236	16213
Exchange 2016 CU3	15326	13236	16212
Exchange 2016 CU2	15325	13236	16212
Exchange 2016 CU1	15323	13236	16211
Exchange 2016 RTM	15317	13236	16210
Exchange 2016 Preview	15317	13236	16041

Exchange 2019 Schema Active Directory versions (Forest Prep)

Exchange 2019 version	rangeUpper	objectVersion (Default)	objectVersion (Configuration)
Exchange 2019 CU9	17002	13240	16757
Exchange 2019 CU8	17002	13239	16756
Exchange 2019 CU7	17001	13238	16755
Exchange 2019 CU6	17001	13237	16754
Exchange 2019 CU5	17001	13237	16754
Exchange 2019 CU4	17001	13237	16754
Exchange 2019 CU3	17001	13237	16754
Exchange 2019 CU2	17001	13237	16754
Exchange 2019 CU1	17000	13236	16752
Exchange 2019 RTM	17000	13236	16751
Exchange 2019 Preview	15332	13236	16213

How to Find Forest rangeUpper and objectVersion

For the forest, you can find out the current schema version by consulting the rangeUpper property of CN=ms-Exch-Schema-Version-Pt,cn=schema,cn=configuration,. To read the forest version, consult the objectVersion property of cn=,cn=Microsoft Exchange,cn=Services,cn=Configuration,.

For example, to find out the current Exchange forest schema version and forest version, use a tool like ADSIEDIT or use PowerShell (replace ‘Contoso’ with the name of your Exchange organization):

ADSIEDIT

CMD-> adsiedit.msc->connect->Schema->configuration->cn=ms-Exch-Schema-Version-pt

Rangupper: 1533 for Exchange 2016 Cu20

objectVersion Default

The same action below but choose connect default

objectVersion configuration

The same action below but choose connect configuration

PowerShell

#Forest rangeUpper
#Forest objectVersion
$RootDSE= ([ADSI]"").distinguishedName
([ADSI]"LDAP://CN=ms-Exch-Schema-Version-Pt,CN=Schema,CN=Configuration,$RootDSE").rangeUpper
([ADSI]"LDAP://cn=viettechgroup,cn=Microsoft Exchange,cn=Services,cn=Configuration,$RootDSE").objectVersion
#//Domain
$RootDSE= ([ADSI]"").distinguishedName
([ADSI]"LDAP://CN=Microsoft Exchange System Objects,$RootDSE").objectVersion

or

PS C:\> # Exchange Schema Version
PS C:\> $sc = (Get-ADRootDSE).SchemaNamingContext
PS C:\> $ob = "CN=ms-Exch-Schema-Version-Pt," + $sc
PS C:\> Write-Output "RangeUpper: $((Get-ADObject $ob -pr rangeUpper).rangeUpper)"
RangeUpper: 15332
 
PS C:\># Exchange Object Version (domain)
PS C:\>$dc = (Get-ADRootDSE).DefaultNamingContext
PS C:\>$ob = "CN=Microsoft Exchange System Objects," + $dc
PS C:\>Write-Output "ObjectVersion (Default): $((Get-ADObject $ob -pr objectVersion).objectVersion)"
ObjectVersion (Default): 13237
 
PS C:\># Exchange Object Version (forest)
PS C:\>$cc = (Get-ADRootDSE).ConfigurationNamingContext
PS C:\>$fl = "(objectClass=msExchOrganizationContainer)"
PS C:\>Write-Output "ObjectVersion (Configuration): $((Get-ADObject -LDAPFilter $fl -SearchBase $cc -pr objectVersion).objectVersion)"
ObjectVersion (Configuration): 16217

Download Script here Get-ADversions.ps1 

Good luck for you to install and deploy Exchange Server 2016, 2019

Phuong Nguyen