Cannot download Update for Windows XP (KB898461)

You should not be worried over lack of updates. Stop obsessing.
Many computers have problems with at least one...
and there is a group that has shut off updates completely, and has shown little to worry about (including me). I became weary of updating...
sometimes disabling all security and firewall before updating, some security may be blocking access or conflicting with the update.
If you have been installing free downloads on your system, that are from third parties, it's not unusual for the system to become corrupted. That is also a common problem.