Our very own Steve Rachui has a cool post over on his blog that talks about how to install patches manually on Windows Vista and Windows Server 2008 machines. While that may sound trivial, if you've every tried this with Vista or Win2K8 SCCM patches you may be left scratching your head on how exactly this is done.
Prior to Windows 2008 and Vista software updates delivered through SMS/SCCM would come down in the form of .exe files and be stored in the client cache. During patch troubleshooting one option might be to attempt to run the patch directly, from the cache.
With Windows 2008 and Vista updates now come down as .cab files and if you double click them to attempt a manual install you will end up just opening the cab to display the packaged content. And, none of the files in the packaged content have an extension that appears to be actionable….