How to turn off Windows Installer to block MSI package
Is there a way to prevent users from installing the .msi package? Windows Installer is a background service, which manages the installation and uninstallation of MSI-based programs. To block the MSI installer, you can turn off Windows Installer using Group Policy or edit the registry.
Method 1: Disable Windows Installer with GPO
To disable Windows Installer using Group Policy, follow these steps:
1. Open Local Group Policy Editor and expand Computer Configuration> Administrative Templates> Windows Components> Windows Installer . Double click on the policy named Turn off Windows Installer in the right panel.
![How to turn off Windows Installer to block MSI package Picture 1](https://tipsmake.com/data/images/how-to-turn-off-windows-installer-to-block-msi-package-picture-1-qixbhk2DM.png)
2. Select Enabled. Click the Disable Windows Installer drop-down list and select Always.
![How to turn off Windows Installer to block MSI package Picture 2](https://tipsmake.com/data/images/how-to-turn-off-windows-installer-to-block-msi-package-picture-2-u9UzhxtX8.png)
3. Click OK and reboot the system to apply the changes. The next time you try to run any .msi package, you will receive an error message: 'The system administrator has set policies to prevent this installation'. (System administrators have set policies to prevent this setting.)
![How to turn off Windows Installer to block MSI package Picture 3](https://tipsmake.com/data/images/how-to-turn-off-windows-installer-to-block-msi-package-picture-3-BhAkmAX9f.png)
Method 2: Disable the Windows Installer by tweaking the Registry
To disable the Windows Installer by tweaking the Registry, follow these steps:
1. Open Registry Editor and browse to:
HKEY_LOCAL_MACHINESoftwarePoliciesMicrosoftWindowsInstaller
If the Installer subkey does not exist, you must create it first.
2. Double-click DWORD 32-bit DisableMSI on the right and set the value to 2 .
![How to turn off Windows Installer to block MSI package Picture 4](https://tipsmake.com/data/images/how-to-turn-off-windows-installer-to-block-msi-package-picture-4-9E24UbrWi.png)
3. Close Registry Editor and restart Windows for the changes to take effect. If you need to re-enable the Windows installer, just set the value of DisableMSI to 0 .
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