The System Administrator has set policies to prevent this installation

This post features solutions to fix The System Administrator has set policies to prevent this installation error on Windows computers. This message occurs when the user is trying to make application-related changes but is unable to do so.

Fix The System Administrator has set policies to prevent this installation

To fix The System Administrator has set policies to prevent this installation error on Windows computers, you will have to take the following steps:

Try installation as an Administrator
Allow installation via Local Group Policy Editor
Allow installation via the Registry Editor.

You will have to be signed in with administrative privileges to carry out these suggestions; if not, you will have to ask your system admin to carry them out.

1] Try installation as an Administrator

Before starting with different methods, try installing the application with administrator privileges. To do so, right-click on the app’s executable file and click on Run as Administrator.

Read: Simple Software Restriction Policy is a security add-on for Windows

2] Allow installation via Local Group Policy Editor

Next, allow the installation via the Group Policy Editor. Doing so may fix the System Administrator has set policies to prevent this installation error. Here’s how:

Login with the Administrator account.
Press Windows + R to open Run, type gpedit.msc and hit Enter.
Navigate to the following path:Computer Configuration > Administrative Templates > Windows Components > Windows Installer
Right-click on Turn off Windows Installer and select Edit.
In the Turn off Windows Installer tab, select Enabled, then click on the drop-down below Disable Windows Installer and select Never.
Click on Apply and then on Ok to save the changes.

Now, again, navigate to the following path:

Windows Settings > Security Settings > Software Restriction Policies

Here, right-click on Software Restriction Policies and select New Software Restriction Policies.
Right-click on Enforcement in the right pane and select Properties.
The Enforcement Properties box will now open; click on All users except local administrators under Apply software restriction policies to the following.
Click on Apply and then on Ok to save the changes.
Restart your device once done and see if the error gets fixed.

Read: How to enable or disable Windows Installer Service

3] Allow installation via the Registry Editor

You can also fix the System administrator has set policies to prevent this installation by making some modifications in the Registry Editor. Here’s how:

Press Windows + R to open Run, type regedit and hit Enter.

Once the Registry Editor opens, navigate to the following path:

HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Installer

Here, right-click on DisableMSI, select Modify, change the value data to 0 and click on Ok to save changes.
Close Registry Editor, restart your device and see if the error’s fixed.

I hope these suggestions help you.

How to fix The system administrator has set policies to prevent this installation in Windows?

To fix The system administrator has set policies to prevent this installation in Windows; you will have to change the settings in Local Group Policy Editor or the Registry Editor as explained in this post.

Read: Error 1625, This installation is forbidden by system policy

How do I disable Windows Installer group policy?

To do so, open the Local Group Policy Editor and navigate to the following path, Computer Configuration > Administrative Templates > Windows Components > Windows Installer. Double-click on Turn off Windows Installer and set it as Enabled.