How can I use the registry to configure the Windows XP or Windows 2000 Service Pack 3 (SP3) Automatic Updates feature?

A. I described the Automatic Updates options you can set with the user interface in a previous FAQ. You can use the registry to configure these same Automatic Updates options by performing the following steps:

  1. Start a registry editor (e.g., regedit.exe).
  2. Navigate to the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update subkey.
  3. Set the DWORD values according to the table below.
  4. Close the registry editor.
Function AUOptions value AUState value ScheduledInstallDay ScheduledInstallTime
Disable automatic update 1 7    
Notify before download 2 2    
Download automatically 3 2    
Download and install automatically 4 2 Numeric, indicating day--0 for every day or 1 to 7 for Sunday to Saturday (e.g., Monday is 2) Numeric, indicating hour--0 for midnight, 23 for 11:00 pm (e.g., 17 for 5:00 pm)

Discuss this Article 4

Jason Credle (not verified)
on Oct 10, 2002
Hi John, I tried to edit the registry so that I can disable Automatic Updates feature. What you listed didn't work and neither did the scheduling of the automatic update. Has anyone else wrote to you about this or do you think I am doing something wrong. Any assistance from you would help me greatly. Thanks in advance!
JForsythe (not verified)
on Sep 9, 2004
Tried this too. The registry key does not exist and has to be created. Even when you do create it, the system does not look at it. I believe you can only use this if you are using the software update server service.

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