these 'outside' updates provided by wsusou after April 2014 is a
subset of 'outside' updates offered by the service 'Automatic updates' of XP?
(I say subset because of the limitation given at
viewtopic.php?f=7&t=172 :
"This catalog file contains at least all the updates classified as "critical" and "security relevant", but it does not necessarily contain all "important" and "optional" ones.")
in other words, there will be no update offered by wsusou and not offered by the service 'Automatic updates'?
_________________________________________
"those will fail to install" ... you mean one day some updates needn't to run on XP?