Want to know what version of Windows Installer comes with Windows Server 2008 or Windows Server 2008 R2?
- Windows Server 2008 and 2008 SP1 comes with Windows Installer 4.0.6001.18000
- Windows Server 2008 SP2 comes with Windows Installer 4.5.6002.18005
- Windows Server 2008 R2 comes with Windows Installer 5.0.7600.16385
Of course, you can update Windows Installer to newer versions, so your Windows Server 2008 box may not necessarily be using these versions of Windows Installer; These versions are just what they come with.