Where I work we have a large amount of Windows XP SP2-SP3 Machines, and whenever Windows update comes along, if the computer isnt on at 3AM to download and install updates it does it the next day when people are using the machine. Unfortunately I dont know of anyway to fix this so I am asking for your help. I want Windows to download and install updates on shutdown or just install them on shutdown so it doesnt interupt the user. Is there even a solution for this problem, or would I have to set Windows update to download only and manually install?