Add this key“DoNotAllowXPSP2". If the value is ‘1’ delivery of Windows XP SP2 via WU and AU is disabled. If the value is not ‘1’ or if the key doesn’t exist, the system will be able to get Windows XP SP2 if the Windows Update site is accessible or if AU is configured to get updates from Windows Update.
如果你已經 download 左 XP SP2,但未安裝的,你可以 CUT & Paste 以下 folder 去第二到先,請記住 stop 左個 Windows Auto-Update 先
c:\windows\SoftwareDistribution
攪完晒就可以行 Windows Update,更新個 Windows ,但又唔駛 Update 到 SP2。