While installing new application or modifying an existing one on your computer you may face “The system administrator has set policies to prevent this installation” error message. This message appears more often when you are accessing the computer with a non-administrative account, where a system administrator has restricted installation or modification of a new application. In order to fix this issue simply follow these steps on your computer.
Fix-1 Set UAC to ‘Never Notify’-
Setting User Account Control (UAC) to “Never Notify” may solve this issue on your computer.
1. Click on the Search box and type “uac“.
2. In the elevated search result window, click on “Change User Account Control settings“.
3. In User Account Control Settings window, on the left side, slide down the bar to “Never Notify“.
4. Then, click on “OK” to save the changes on your computer.
Click on “Yes” in case you are prompted for permission by User Account Control.
Once done, try to modify/ install the application again. If the problem still persists go for the next fix.
Fix-2 Delete ProductName key from Registry Editor-
1. Click on Search box beside Windows icon and type “regedit” and then click on “Registry Editor” to open Registry Editor window.
Click on “Yes” to permit User Account Control.
Before you proceed further it is better to create a registry editor backup on your computer. In case, any thing goes wrong, you can easily recover your registry.
2. In Registry Editor window, click on “File” on the menu-bar and then click on “Export“.
3. In Export Registry File window, choose a favorable location to store the backup on your computer. Then, name the backup as “Original Registry“.
4. Set the ‘Export Range‘ to “All” and then click on “Save” to save the registry backup on your computer.
5. In Registry Editor window, go this location-
6. On the right hand side of the window, check if you are able to find “DisableMSI” DWORD value.
7. If you see the key, then you can skip this step.
If you can’t find any key named “DisableMSI” then you have to create the key. Follow these steps to do so-
a. On the right hand side of the Registry Editor window, right click and then click on “New>” and then click on “DWORD (32-bit) Value“.
b. Name the new key as “DisableMSI“.
8. On the right hand side, double click on “DisableMSI” to edit the value data of the key.
9. Now, set the ‘Value data:‘ to “0” and then click on “OK” to save the changes.
10. Same way, navigate to this location-
11. Now, click on each of the keys to select it. Then check “ProductName” of the key to know the name of the program the key associated with it.
12. Check all the keys until you have found the key associated with the problematic program.
13. Right click on the problematic key and then click on “Delete” to delete the key from your computer.
Close Registry Editor on your computer.
Restart your computer to let the changes take effect.
After rebooting, you will be able to install or modify application on your computer.
Fix-3 Add an admin account using CMD-
1. Click in Search box beside Windows icon and then type “cmd“.
2. Then, right click on “Command Prompt” in the elevated search result and choose “Run as administrator“.
3. Click on “Yes” if you are prompted for permission by User Account Control.
Command Prompt with administrative rights will be opened.
4. Now, copy-paste this command in Command Prompt window, and hit Enter to execute it on your computer.
net user administrator /active:yes
Once you have executed this command, close Command Prompt window.
Reboot your computer.
After rebooting your computer, you will notice a new administrator account, log in to your computer with it.
Now, once you have logged in with the new administrative account, try to install the program on your computer. Your problem should be solved.
Fix-4 Use Group Policy Editor-
If the previous method didn’t work out for you, this one surely will.
1. Press Windows key+R to launch Run, and type “gpedit.msc” and hit Enter.
Local Group Policy Editor window will be opened.
2. Now, on the left pane, navigate to this location-
Computer Configuration > Administrative Templates > Windows Components > Windows Installer
On the right hand side window, scroll down and double click on “Turn off Windows Installer“.
3. In Turn off Windows installer window, click on “Enabled” to select it.
4. Now, click on the drop-down icon in Disable Windows Installer section and then select “Never” from the drop-down.
5. Finally, click on “Apply” and “OK” to save the changes on your computer.
Close Local Group Policy Editor window on your computer.
Restart your computer to save the changes on your computer.
After rebooting your computer, you will be install/ modify an application on your computer.
Your problem should be solved.
Sambit is a Mechanical Engineer By qualification who loves to write about Windows 10 and solutions to weirdest possible problems.