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Couldn’t install programs
Sorry, you cannot install the programs you’ve chosen on this operating system.
Error: os_check: 0×80280004
Next steps: Check the system requirements for more details.
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I have several times tried to install Windows Live Messenger 2009 on my Windows Server 2003 without any luck. Simply because the new version wasn’t supported in Windows Server 2003 
I have managed and accepted that until for now.
But this morning I wasn’t able to login unless I upgraded my Messenger, and I couldn’t upgrade because I was running Windows Server 2003! The chicken or the egg again???
Anyway I found this great blog post that does the hack:
http://devadraco.blogspot.com/2009/03/installing-windows-live-messenger-2009.html
Just follow the steps and you are home safe again
