http://blogs.technet.com/b/mempson/archive/2011/08/23/wsusscn2-cab-manual-download-location.aspxWhen using MBSA in an offline mode, it is sometimes required to download the catalogue file manually (due to firewall restricitions on some PCs etc) The below link will enable you to download it. I hope you will find this useful as I can never rememberen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/mempson/archive/2011/08/23/wsusscn2-cab-manual-download-location.aspx#3568042Sat, 20 Apr 2013 14:08:41 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3568042CanBerra<p>&quot;Thanks for this! Wsusoffline is currently having issues with downloading it.&quot;</p> <p>This is case for several months now and not just currently.</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3568042" width="1" height="1">http://blogs.technet.com/b/mempson/archive/2011/08/23/wsusscn2-cab-manual-download-location.aspx#3548632Sun, 27 Jan 2013 20:54:53 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3548632Galane<p>Thanks for this! Wsusoffline is currently having issues with downloading it.</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3548632" width="1" height="1">