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This page is no longer being maintained. For an updated list, see Exchange & Outlook Build Info at slipstick.com. Continue to refer to this page for the obsolete versions of Outlook and Exchange. (Obsolete versions are Exchange Server 2000 and older; Outlook 2002 and older.)

Exchange: 2000 | 2003 | 2007    
Outlook: 97/98 | 2000 | 2002 | 2003 | 2007

Exchange & Outlook Build Info

Since the first release of Microsoft Exchange Server and Microsoft Outlook, Microsoft has released many updates and service packs. Most of them also include updates for the old Microsoft Exchange client and Microsoft Outlook which is the premier messaging client of Microsoft.

The following list is an overview of the available public Microsoft Exchange and Microsoft Outlook builds. The list also includes useful information which should help an administrator to determine the build info of a client that is logged-on to the Microsoft Exchange Server.

To check the build on the Microsoft Exchange Server start the Microsoft Exchange Server admin program and select 'Logons' under 'Private Information Store' of your particular server.

Exchange 4.x

Exchange Build

Exchange Admin Build

Comments

837.x 4.0.837.x Exchange 4.0. Initial release in Q1/1996
  4.0.838.x Exchange 4.0 SP 1. No Exchange client release
993.x 4.0.993.x Exchange 4.0 SP 2
994.x 4.0.994.x Exchange 4.0 SP 3
995.x 4.0.995.x Exchange 4.0 SP 4
996.x 4.0.996.x Exchange 4.0 SP 5
Exchange 5.x

Exchange Build

Exchange Admin Build

Comments

1457.x 5.0.1457.x Exchange 5.0. Initial release in Q1/1997
1458.x 5.0.1458.x Exchange 5.0 SP 1
1460.x 5.0.1460.x Exchange 5.0 SP 2
  5.5.1960.x Exchange 5.5. Initial release in Q4/1997. Beginning with this version, Microsoft no longer provides an Exchange client.
  5.5.2232.x Exchange 5.5 SP 1. Released in Q3/1998. No Exchange client release
  5.5.2448.x Exchange 5.5 SP 2. Released in Q4/1998. No Exchange client release
  5.5.2650.x Exchange 5.5 SP 3. Released in Q3/1999. No Exchange client release
  5.5.2653.x Exchange 5.5 SP 4. Released in Q4/2000. No Exchange client release
Exchange 2000

Exchange Admin Build

Comments

6.0.4417.5 Exchange 2000. Initial release in Q3/2000. Requires Windows 2000 Service Pack 1 and at least one Windows 2000 Server that hosts Active Directory.
6.0.4712.7 Exchange 2000 SP1. Updated release in Q2/2001. Microsoft recommends Windows 2000 Service Pack 2 to be installed.
6.0.5762.4 Exchange 2000 SP2. Updated release in Q4/2001. Microsoft recommends Windows 2000 Service Pack 2 to be installed.
6.0.6249.4 Exchange 2000 SP3. Updated release in Q2/2002. Microsoft recommends at least Windows 2000 Service Pack 2 to be installed.
Exchange 2003

Exchange Admin Build

Comments

6.5.6944.4 Exchange 2003. Initial Release July 2003. RTM
6.5.7226.6 Exchange 2003 SP1. Released May 2004
Exchange 2007

Exchange Admin Build

Comments

  Exchange 2007 RTM Released Nov 2006
   
Outlook 97 and 98

Version

Outlook Build

Exchange Admin Build

Comments

8.0 8.00.3511 4.0.994.x Outlook 97. Initial release in Q1/1997. Does not display build info at the client Help, About menu
8.01 8.01.3817 5.0.1457.x Outlook 97. Ships only with Microsoft Exchange 5.0 Service Pack 1
8.02 8.02.4212 5.0.1458.x. Outlook 97. Ships only with Microsoft Office 97 SR-1
8.03 8.03.4629 5.0.1960.x Outlook 97. Ships only with Microsoft Exchange Server 5.5 and Microsoft Exchange 5.0 Service Pack 2
8.04 8.04.5619 5.0.1960.x Outlook 97. Ships only with Microsoft Office 97 SR-2
8.5 8.5.5104.6 5.0.2178.x Outlook 98. Initial release in Q1/1998. Is included with the Microsoft Exchange 5.5 Service Pack 1 CD-ROM (not available for download at the Microsoft site)
8.5 8.5.5603.0 Unchanged Outlook 98. On a computer with the Microsoft Outlook 98 Security Patch 2 installed, the version number that is shown at the client Help, About menu is updated. At the Microsoft Exchange admin program the version number remains unchanged.
For more information about Microsoft Outlook 98 version differences please check the Slipstick Exchange & Outlook Solution Center, Outlook 98 page.
8.5 8.5.7806 Unchanged Outlook 98 security update patch installed. For more information please check the Slipstick Exchange & Outlook Solution Center, Outlook e-mail Security Update.
Outlook 2000 - Version 9.0

Outlook Build

Exchange Admin Build

Comments

9.0.0.2711.x 5.0.2819.x Outlook 2000. Initial release in Q2/1999. Currently available with Office 2000.
The standalone application is available on CD-ROM for North America customers only (not available for download).
Outlook 2000 is now also included in the Exchange Server 5.5 service pack 3 CD-ROM kit but still not available for download on the Web.
9.0.0.3011.x Unchanged Only included in Microsoft Office 2000 Developer Edition released in Q3/1999.
For more information about Microsoft Outlook 2000 version differences please check the Slipstick Exchange & Outlook Solution Center, Outlook 2000 page.
9.0.0.3821.x 5.0.3121.x Outlook 2000 update included with Office 2000 SR1 (and SR1a)
9.0.0.4201.x 5.0.3136.x Outlook 2000 security update patch installed. For more information please check the Slipstick Exchange & Outlook Solution Center, Outlook e-mail Security Update.
9.0.0.4527.x 5.0.3144.x Outlook 2000 with Service Pack 2 installed. For more information please check the Slipstick Exchange & Outlook Solution Center, Outlook 2000 Service Pack 2.
9.0.0.6627   Outlook 2000 - SP3 Security Update
9.0.0.6673   Outlook 2000 - SP3 Security Update
9.0.0.8968   Outlook 2000 - post SP3 Security Update
Outlook 2002 - Version 10.0

Outlook Build

Exchange Admin Build

Comments

10.0.2627.2625 10.0.0.2627 Outlook 2002. Initial release in Q1/2001. Currently available with Office XP or the Exchange 2000 Server Service Pack 1 CD-ROM
10.0.3513.3501 10.0.0.3416 Outlook 2002 with Service Pack 1 installed. Currently available with Office XP Service Pack 1. For more information please check the Slipstick Exchange & Outlook Solution Center.
10.0.4219.4219 10.0.0.4115 Outlook 2002 with Service Pack 2 installed. Currently available with Office XP Service Pack 2. For more information please check the Slipstick Exchange & Outlook Solution Center.
10.0.6515.6626   Outlook 2002 SP3 (released 9 Mar 2004)
10.0.   Outlook 2002 post SP3 (June 2004)
Outlook 2003 - Version 11.0

Outlook Build

Exchange Admin Build

Comments

11.5608.5606 11.0.5604 Initial release Oct. 2003. RTM build.
Note that Internet header field X-Mailer reports Build 11.0.5510
11.5608.5703 11.0.5604 Outlook 2003 with critical update releases on 11.4.2003. See KB828041.
Note that Internet header field X-Mailer reports Build 11.0.5510
11.6359.6360 11.0.6353 Outlook 2003 SP1, released August 2003. The Internet header reports "X-Mailer: Microsoft Office Outlook, Build 11.0.6353"
Outlook 2007 - Version 12.0

Outlook Build

Exchange Admin Build

Comments

12.0.4518.1014   Outlook 2007. Initial release. Nov 2006. RTM Version
12.0.6014.5000   April 13, 2007 Update to fix calendar and performance issues. See KB 933493 

All Service Packs are available for download from the Microsoft Download Center or Microsoft Update

If you want to know which CDO version shipped with a specific Exchange & Outlook version, please take a look at 'Digging deeper into CDO', Versions.