Microsoft Exchange Server Build Numbers and Release Dates

This collection of various Microsoft Exchange Server version, build, revision numbers and release dates will help you identify which version and build of Exchange Server and/or Service Pack you currently have installed on your server.

Introduction

The table below covers Microsoft Exchange Server version, build and revision numbers dating back to the Exchange Server 4.0 days, right down to the current Microsoft Exchange Server product.

Microsoft Exchange Server 4.0 Build Numbers and Release Dates

Version                                   Build number   Release date 
----------------------------------------------------------------------- 
Microsoft Exchange Server 4.0            4.0.837        April 1996 
Microsoft Exchange Server 4.0 (a)        4.0.993        August 1996 
Microsoft Exchange Server 4.0 SP1        4.0.838        May 1996 
Microsoft Exchange Server 4.0 SP2        4.0.993        August 1996 
Microsoft Exchange Server 4.0 SP3        4.0.994        November 1996 
Microsoft Exchange Server 4.0 SP4        4.0.995        April 1997 
Microsoft Exchange Server 4.0 SP5        4.0.996        May 1998

Microsoft Exchange Server 5.0 Build Number and Release Dates

Version                                   Build number   Release date 
-----------------------------------------------------------------------
Microsoft Exchange Server 5.0            5.0.1457       March 1997 
Microsoft Exchange Server 5.0 SP1        5.0.1458       June 1997 
Microsoft Exchange Server 5.0 SP2        5.0.1460       February 1998

Microsoft Exchange Server 5.5 Build Number and Release Dates

Version                                   Build number   Release date 
-----------------------------------------------------------------------
Microsoft Exchange Server 5.5            5.5.1960       November 1997 
Microsoft Exchange Server 5.5 SP1        5.5.2232       July 1998 
Microsoft Exchange Server 5.5 SP2        5.5.2448       December 1998 
Microsoft Exchange Server 5.5 SP3        5.5.2650       September 1999 
Microsoft Exchange Server 5.5 SP4        5.5.2653       November 2000

Microsoft Exchange Server 2000 Build Number and Release Dates

Version                                   Build number   Release date 
-----------------------------------------------------------------------
Microsoft Exchange 2000 Server            6.0.4417       October 2000 
Microsoft Exchange 2000 Server (a)        6.0.4417       January 2001 
Microsoft Exchange 2000 Server SP1        6.0.4712       July 2001 
Microsoft Exchange 2000 Server SP2        6.0.5762       December 2001 
Microsoft Exchange 2000 Server SP3        6.0.6249       August 2002 
Microsoft Exchange 2000 Server post-SP3   6.0.6487       September 2003 
Microsoft Exchange 2000 Server post-SP3   6.0.6556       April 2004 
Microsoft Exchange 2000 Server post-SP3   6.0.6603       August 2004

Microsoft Exchange Server 2003 Build Number and Release Dates

Version                                   Build number   Release date 
-----------------------------------------------------------------------
Microsoft Exchange Server 2003           6.5.6944       October 2003 
Microsoft Exchange Server 2003 SP1       6.5.7226       May 2004 
Microsoft Exchange Server 2003 SP2       6.5.7638       October 2005

Microsoft Exchange Server 2007 Build Number and Release Dates

Version                                   Build number   Release date 
-----------------------------------------------------------------------
Microsoft Exchange Server  2007           8.0.685.25     December 2006
Update Rollup 1 for Exchange Server 2007  8.0.708.3      April 2007
Update Rollup 2 for Exchange Server 2007  8.0.711.2      May 2007
Update Rollup 3 for Exchange Server 2007  8.0.730.1      June 2007
Update Rollup 4 for Exchange Server 2007  8.0.744.0      August 2007
Update Rollup 5 for Exchange Server 2007  8.0.754.0      October 2007
Update Rollup 6 for Exchange Server 2007  8.0.783.2      February 2008
Update Rollup 7 for Exchange Server 2007  8.0.813.0      July 2008

Microsoft Exchange Server  2007 SP1       8.1.0240.006   November 2007
Update Rollup 1 for Exchange 2007 SP1     8.1.263.1      February 2008   
Update Rollup 2 for Exchange 2007 SP1     8.1.278.2      May 2008
Update Rollup 3 for Exchange 2007 SP1     8.1.291.2      July 2008
Update Rollup 4 for Exchange 2007 SP1     8.1.311.3      October 2008
Update Rollup 5 for Exchange 2007 SP1     8.1.336.1      November 2008
Update Rollup 6 for Exchange 2007 SP1     8.1.340.1      February 2009
Update Rollup 7 for Exchange 2007 SP1     8.1.359.2      March 2009
Update Rollup 8 for Exchange 2007 SP1     8.1.375.2      May 2009
Update Rollup 9 for Exchange 2007 SP1     8.1.293.1      July 2009
Microsoft Exchange Server  2007 SP2       8.2.0176.002   August 2009

Exchange Server MTA Build Numbers

The following build numbers for the Microsoft Exchange Server Message Transfer Agent (MTA) might also be useful for debugging:

Exchange Server MTA Version Name          MTA Build Number
----------------------------------------------------------
Microsoft Exchange MTA 4.0 RTM            Build 837.9
Microsoft Exchange MTA Service Pack 1     Build 838.10
Microsoft Exchange MTA Service Pack 2     Build 993.6
Microsoft Exchange MTA 4.0a               Build 993.6
Microsoft Exchange MTA Service Pack 3     Build 994.54
Microsoft Exchange MTA Service Pack 4     Build 995.54
Microsoft Exchange MTA Service Pack 5     Build 996.72
Microsoft Exchange MTA 5.0 RTM            Build 1457.8
Microsoft Exchange MTA Service Pack 1     Build 1458.56
Microsoft Exchange MTA Service Pack 2     Build 1460.13
Microsoft Exchange MTA 5.5 RTM            Build 1960.3
Microsoft Exchange MTA Service Pack 1     Build 2232.18
Microsoft Exchange MTA Service Pack 2     Build 2448.1
Microsoft Exchange MTA Service Pack 3     Build 2650.24
Microsoft Exchange MTA Service Pack 4     Build 2653.23

Conclusion

This article lists all the Microsoft Exchange Server version and build numbers between April 1996 and present day release. It is our hope that it will help you identify the version of software you're running.