Registry keys for configuring Automatic Updates & WSUS

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• HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WindowsUpdate
• HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
• HKEY_LOCAL_MACHINE\SYSTEM\Internet Communication Management\Internet Communication
• HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\WindowsUpdate
• HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WindowsUpdate\AU
  

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Registry keys for Windows Updates

HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WindowsUpdate

[td]

Entry name	Data type	Values
DisableWindowsUpdateAccess	Reg_DWORD	1 = Disables access to Windows Update.
		0 = Enables access to Windows Update
WUServer	Reg_SZ	HTTP(S) URL of the WSUS server that is used by Automatic Updates and API callers (by default). This policy is paired with WUStatusServer, and both keys must be set to the same value to be valid.
WUStatusServer	Reg_SZ	The HTTP(S) URL of the server to which reporting information is sent for client computers that use the WSUS server that is configured by the WUServer key. This policy is paired with WUServer, and both keys must be set to the same value to be valid.

WSUS registry keys for Internet Explorer

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer

[td]

Entry name	Data type	Values
NoWindowsUpdate	Reg_DWORD	1 = Enabled. Users cannot connect to the Windows Update website.
		0 = Disabled or not configured. Users can connect to the Windows Update website.

WSUS registry keys for Internet Communication

HKEY_LOCAL_MACHINE\SYSTEM\Internet Communication Management\Internet Communication

[td]

Entry name	Data type	Corresponding Group Policy Setting	Values
DisableWindowsUpdateAccess	Reg_DWORD	Turn off access to all Windows Update features	1 = Enabled. All Windows Update features are removed. This includes blocking access to the Windows Update website at http://windowsupdate.microsoft.com, from the Windows Update hyperlink on the Start menu, and also on the Tools menu in Internet Explorer. Windows automatic updating is also disabled; you will neither be notified about nor will you receive critical updates from Windows Update. This setting also prevents Device Manager from automatically installing driver updates from the Windows Update website.
			0 = Disabled or not configured. Users will be able to access the Windows Update website and enable automatic updating to receive notifications and critical updates from Windows Update..

WSUS registry key for Windows Update

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\WindowsUpdate

[td]

Entry name	Data type	Values
DisableWindowsUpdateAccess	Reg_DWORD	1 = Enabled. All Windows Update features are removed.
		0 = Disabled or not configured. All Windows Update features are available

Registry keys for Automatic Update configuration options

HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\WindowsUpdate\AU

[td]

Entry name	Data type	Values
AUOptions	Reg_DWORD	2 = Notify before download.
		3 = Automatically download and notify of installation.
		4 = Automatically download and schedule installation. Only valid if values exist for ScheduledInstallDay and ScheduledInstallTime.
		5 = Automatic Updates is required and users can configure it.
NoAutoUpdate	Reg_DWORD	0 = Enable Automatic Updates.
		1 = Disable Automatic Updates.
UseWUServer	Reg_DWORD	1 = The computer gets its updates from a WSUS server.
		0 = The computer gets its updates from Microsoft Update.
		The WUServer value is not respected unless this key is set.