The following table identifies the support lifecycle for each version of Exchange.

The following table identifies the release model used for updates and hotfixes for each version of Exchange. With Exchange, each update rollup package is cumulative with regard to the whole product. Therefore, if you apply an update rollup package to Microsoft Exchange Server 2010, you apply all the fixes contained in that update rollup package. This includes all the fixes contained in each earlier update rollup package. For more information, see Exchange 2010 Servicing.

When an update or a hotfix for earlier versions of Exchange is created, one or more of the binary files included in the update or included in the hotfix are cumulative. They are cumulative with regard to the contents of the files. However, they aren't cumulative with regard to the whole Exchange product. The release model used by a product is identified by an X character.

The following table identifies the operating system platforms on which each version of Exchange can run. Supported platforms are identified by an X character.

*Only for Exchange management tools

**Only for Exchange 2003 or Exchange 2000 System Manager

***Only together with Exchange 2003 System Manager for Windows Vista

The following table identifies the Active Directory environments with which each version of Exchange can communicate. Supported environments are identified by an X character. An Active Directory server refers both to global catalog servers and to domain controllers.

The following table identifies the Web browsers supported for use together with the premium version of Microsoft Office Outlook Web App for Exchange 2010, Office Outlook Web Access for Exchange 2007 or Exchange 2003, or Outlook Web Access for Exchange 2000. Supported browsers are identified by an X character.

**Requires the hotfix described in Microsoft Knowledge Base article 963664, Error message when you click the flag icon of a message in the message list view in Outlook Web Access 2003 when you are using Internet Explorer 8: "'firstchild.firstchild' is null or not an object".

***Requires the hotfix described in Knowledge Base article 911829, You receive an error message when you try to perform any editing tasks, or you must click to enable the compose frame in Outlook Web Access.

The following table identifies the Web browsers that are supported for use together with the light (basic) version of Outlook Web App for Exchange 2010 or Outlook Web Access for Exchange 2007, for Exchange 2003, or for Exchange 2000. Supported browsers are identified by an X character.

**Requires the hotfix described in Knowledge Base article 963664, Error message when you click the flag icon of a message in the message list view in Outlook Web Access 2003 when you are using Internet Explorer 8: "'firstchild.firstchild' is null or not an object".

***Requires the hotfix described in Knowledge Base article 911829, You receive an error message when you try to perform any editing tasks, or you must click to enable the compose frame in Outlook Web Access.

****Browser should support HTML 3.2, European Computer Manufacturers Association (ECMA) script standards, and JavaScript.

The following table identifies the Web browsers that are supported for the use of S/MIME together with Outlook Web App for Exchange 2010 or Outlook Web Access for Exchange 2007, Exchange 2003, or Exchange 2000. Supported browsers are identified by an X character.

**Requires Update Rollup 8 for Exchange Server 2007 Service Pack 1 (SP1) or later versions. For more information, see Description of Update Rollup 8 for Exchange Server 2007 Service Pack 1.

***Requires the hotfix described in Knowledge Base article 924334, The Compose Message form stops responding after you install Internet Explorer 7.0 and the S/MIME control on an Outlook Web Access client in Exchange Server 2003.

The following table identifies the mailbox clients that are supported for use together with each version of Exchange. Supported clients are identified by an X character.

*WebDav: Contacts, Events, IMAP: Mail

****EWS only. There is no DAV support for Exchange 2010.

The following table identifies the version of Microsoft Exchange that can be used together with the Microsoft Exchange Inter-Organization Replication tool (Exscfg.exe; Exssrv.exe). The tool is used to replicate public folder information (including free/busy information) between Exchange organizations. For more information, see Microsoft Exchange Server Inter-Organization Replication. Supported versions are identified by an X character.

Note:
You must run the Inter-Organization Replication tool on a 32-bit operating system that has Exchange 2003 Management Tools installed.

Important:
If you want to use the Inter-Organization Replication tool, one of the Exchange replication endpoints must be an Exchange 2003 server.

The following table identifies the version of the Microsoft .NET Framework that can be used together with each version of Exchange. Supported versions are identified by an X character.

***Supported versions of the .NET Framework are included in the .NET Framework 3.5 and in the .NET Framework 3.5 SP1.

****Applies only when upgrading the system from .NET Framework 3.5 and .NET Framework 3.5 SP1. Uninstall of .NET Framework 3.5 and .NET Framework 3.5 SP1 isn't supported.

The following table identifies the version of the Windows PowerShell command-line interface that can be used together with each version of Exchange. Supported versions are identified by an X character.

The following table identifies the version of Microsoft Management Console (MMC) that can be used together with each version of Exchange. Supported versions are identified by an X character.

The following table identifies the version of Windows Installer that is used together with each version of Exchange. Supported versions are identified by an X character.