How to find the versions of SharePoint

Using SharePoint Central Administration Web site SharePoint HTML Site Setting’s admin pages or IIS Manager, on the web sites properties HTTP Headers tab, virtual servers once extended will show the following version numbers:

MOSS 2007* or WSS 3.0 Cumulative update (KB956056 & KB956057) 12.0.0.6327
MOSS 2007* or WSS 3.0 Infrastructure Update (KB951695 & KB951297) 12.0.0.6318
MOSS 2007* or WSS 3.0 post-SP1 hotfix (KB948945) 12.0.0.6303
MOSS 2007* or WSS 3.0 post-SP1 hotfix (KB941274) 12.0.0.6301MOSS 2007* or WSS 3.0 post-SP1 hotfix (KB941422) 12.0.0.6300
MOSS 2007* or WSS 3.0 SP1 12.0.0.6219
MOSS 2007* or WSS 3.0 October public update 12.0.0.6039
MOSS 2007* or WSS 3.0 August 24, 2007 hotfix package 12.0.0.6036
MOSS 2007* or WSS 3.0 RTM 12.0.0.4518
MOSS 2007* or WSS 3.0 Beta 2 TR: 12.0.0.4407
MOSS 2007* or WSS 3.0 Beta 2: 12.0.0.4017

Office 12 (PDC image - pre-beta): 12.0.0.3111 (This version of Office does not have a support link in the Add/Remove programs dialog box).

*To confirm that a particular service pack is install on SharePoint Server you must either check the version numbers of specific dlls as specified in the related Microsoft Knowledge Based article or select the Show Updates check box in Add and Remove Programs.

WSS 2.0 SP3 6.0.2.8165
WSS 2.0 SP2 KB900929 + KB924881 6.0.2.8117
WSS 2.0 SP2 rollup KB900929 6.0.2.8000
WSS 2.0 SP2 6.0.2.6568
WSS 2.0 SP2 Beta = R2: 6.0.2.6551
WSS 2.0 SP1 + KB887981 6.0.2.6411
WSS 2.0 SP1: 6.0.2.6361
WSS 2.0 Unservice packed: 6.0.2.5530
To confirm that service packs are installed, especially with SharePoint Server 2007, go to Control Panel -> Add and Remove Programs
Select the product and then click: Click here for support. The versions will
be displayed as follows:

For WSS 3.0 & MOSS 2007
WSS 3.0 MOSS 2007
post-SP1 hotfix (KB948945) 12.0.6303.5000 12.0.6303.5000
SP1 12.0.6219.1000 12.0.6219.1000
RTM 12.0.4518.1016 12.0.4518.1016
Beta 2 TR 12.0.4407.1005 12.0.4407.1005
Beta 2 12.0.4017.1006 12.0.4017.1006

For WSS 2.0 & SPS 2003
WSS 2.0 SPS 2003
SP3 11.0.8173.0 11.0.8168.0
post SP2 rollup 11.0.8000.0 11.0.8126.2
SP2 11.0.7969.0 11.0.8126.0
R2 WSS SP2 beta 11.0.6551.0
SP1+KB887981 11.0.6411.0
With Service Pack 1 11.0.6361.0 11.0.6715.0
Unserviced pack 11.0.5608.0 11.0.5704.0

Note: If you have a version number starting with 10, then it is either SharePoint Team Services (SPTS) or SharePoint Portal 2001 (SPS 2001).

SPTS, 10.0.2627.01 is the version with no service packs. In the Administrative Tools menu, you will see a link to Microsoft SharePoint Administrator. This will display a web page, where you can see the version number of the virtual server(s), e.g., 5.0.2.2623. The ISAPI filter is fpexedll.dll.

For SPS 2001, 10.145.4629 is the version number with no service packs. There will be no ISAPI filter, and from the Administrative Tools menu you will see a link to SharePoint Portal Server Administrator which launches mmc snap-in.