Data type Range Default value
REG_DWORD 0 | 1 | 2 0


Disables or restricts the use of Windows Installer. This entry can prevent users from installing software on their systems or permit users to install only those programs offered by a system administrator.

This entry stores the setting of the Disable Windows Installer Group Policy. Group Policy adds this entry to the registry when you enable the Disable Windows Installer policy. If you disable the policy or set it to Not configured, Group Policy deletes the entry from the registry and the system behaves as though the value is 0.

Value Meaning
0 The policy is enabled and set to Never. Windows Installer is fully enabled. Users can install and upgrade software. Windows Installer is enabled by default on Windows 2000. This value has the same effect as disabling or not configuring the policy.
1 The policy is enabled and set to For non-managed apps only. Users are permitted to install only those programs that a system administrator assigns (offers on the desktop) or publishes (adds to Add/Remove Programs).
2 The policy is enabled and set to Always. Windows Installer is disabled.

Change method

To change the value of this entry, use Group Policy. This entry corresponds to the Disable Windows Installer policy (Computer Configuration\Administrative Templates\Windows Components\Windows Installer). Use the options in the Disable Windows Installer box to establish an installation policy.

Note Image Note

This entry affects Windows Installer only. It does not prevent users from using other methods to install and upgrade programs.

Tip Image Tip

For detailed information about particular Group Policy settings, see the Group Policy Reference (Gp.chm) on the Windows 2000 Resource Kit companion CD.

For general information about Group Policy, see Group Policy in Windows 2000 Help.

To see a table associating policies with their corresponding registry entries, see the Group Policy Reference Table.