ISA/TMG Server Build Numbers
Did you ever wonder how to find out which Hotfix/Service Pack Level your ISA/TMG Server is currently running on?
In ISA Server 2004/2006 or TMG simply open an MMC on the ISA/TMG Server and Open Help -> About Microsoft ISA/TMG Server. Here you'll see the Version Number of your ISA/TMG Server (screenshot shows ISA 2006 SP1).

Another way to check out the Version number is to open the ISA/TMG installation directory and right-click the wspsrv.exe, which is the firewall service executable file. Select Properties and the Version Tab.

The following list shows the version number with the Hotfix/Service Pack level of your ISA Server:
ISA Server 2000 (SE and EE)
RTM 3.0.1200.50
SP1 3.0.1200.166
FP1 3.0.1200.235
SP2 3.0.1200.365
Latest HotFix (not accumulated) 1200.443
ISA Server 2004 SE
BETA 4.0.2161.153
RTM 4.0.2161.50
SP1 4.0.2163.213
SP2 4.0.2165.594
SP3 4.0.2167.887
Latest hotfix package 2167.910
http://support.microsoft.com/kb/970454
ISA 2004 EE
BETA 4.0.3437.63
RTM 4.0.3439.50
SP2 4.0.3443.594
SP3 4.0.3445.887
Latest hotfix package 3445.910
http://support.microsoft.com/kb/970454
ISA Server 2006 EE/SE
RTM 5.0.5720.100
Supportability 5.0.5721.240
SP1 5.0.5723.493
latest hotfix package 5.0.5723.518
http://support.microsoft.com/kb/976301
TMG Medium Business Edition
RTM with MS09-16 6.0.6417.153
latest hotfix package 6.0.6417.154
http://support.microsoft.com/kb/973828/
TMG Server 2010
RC 7.0.7733.100
RTM 7.0.7734.100
* Hotfixes on ISA Server 2004
- All Hotfixes included in ISA 2004 SP1 are also included in ISA Server 2004 EE RTM.
- All Hotfixes after ISA 2004 SP1 and ISA 2004 EE are shipped separately for both SKUs if the fix addresses issues existing in both products.
- There will be only one KB and it will mention both the SE and the EE fix in the reolution section.
(Example: 894483 - Users receive an "Error Code 502: Proxy error. The parameter is incorrect. (87)" error when they visit certain URLs after you configure HTTP content filtering based on signatures or extensions in ISA Server 2004)
Please also note that all ISA Hotfixes and Service Packs are cummulative. E.g. this means that if you have found a KB article describing an issue which was fixed prior to the release of SP1 for ISA Server 2006 and you have already applied SP1 then your ISA Server has the fix already installed and there is no need to install the fix again.
Author:
Philipp Sand
Support Specialist ISA Server
Technical Reviewer
Thomas Detzner
Escalation Engineer ISA Server