How To Fix “This Installation Is Forbidden by System Policy” Error On Windows

Windows may display an error message saying, “This installation is forbidden by system policy,” when installing some files. There’s a good chance you unknowingly configured specific parameters. Otherwise, your device’s bugs are to blame for the problem. Here’s how to solve the Windows “installation” problem.

How To Fix “This Installation Is Forbidden by System Policy” Error

1. Windows Installer Service should be enabled

If the Windows Installer is disabled, you’ll probably encounter several installation problems. If this feature is blocked, you can find uninstalling the software from your PC difficult. So, you could fix the “installation is prohibited by system policy” problem by ensuring that the Windows Installer is enabled. The steps you must take are as follows:

Step 1: To see the Run command dialogue box, press Win + R.

Step 2: To open the Services window, enter services.msc and click Enter.

Step 3: Double-click the Windows Installer option after scrolling down.

Step 4: Select Manual from the drop-down box after clicking the Windows Installer Startup type. 

Step 5: To enable the service, click the Start button. 

Step 6: To save these changes, click OK after clicking Apply.

2. Utilize The App Install And Uninstall Troubleshooter From Microsoft

The Microsoft Program Install and Uninstall Troubleshooter may also be of assistance, mainly if corrupted Registry keys bring on the current problem. So, the procedures for using this tool are as follows:

Step 1: On the Microsoft website, download the Program Install and Uninstall Troubleshooter.

Step 2: To launch the installed file, double-click on it.

Step 3: Select the Installing option after clicking the Next button.

Step 4: Next, choose the malfunctioning app and click the button. 

Step 5: Click the Not listed option and conduct a manual search for the program if you cannot locate it on the list. 

Step 6: To complete the process, continue by following the on-screen instructions.

3. Installing Applications In Safe Mode

The “installation is restricted by system policy” error may also be resolved by installing your programs in safe mode. This approach might be useful if the mistake results from malfunctioning software. The procedures for installing apps in safe mode are as follows:

Step 1: Select the Best match after Settings into the Start Menu search box.

Step 2: After choosing Update and Security, choose Recovery.

Step 3: Select the Advanced Startup option, then click the Restart Now button. The Recovery Environment will be used to restart your computer.

Step 4: Select the Startup Settings under Advanced settings on the following screen. 

Step 5: Finally, to start your computer in Safe Mode, simultaneously hit the Restart button and the F4 key.

4. Activate The Windows Installer Service Once More

Sometimes the best course of action is to re-register the Windows Installer service. So, the procedures for re-registering this tool are as follows:

Step 1: In the search box on the Start Menu, enter Command Prompt. 

Step 2: Then, choose Run as administrator by right-clicking on the Best Match result.

Step 3: The Windows Installer can then be temporarily “unregistered” by entering the command that follows and pressing Enter:

msiexec /unreg

Step 4: After this is finished, enter the following command to re-register the Windows Installer:

msiexec /regserver

Step 5: Restarting your device after the procedure is finished will save these modifications.

5. Remove Junk And Temporary Files

The  “This Installation Is Forbidden by System Policy” error can also occur due to conflicting junk or temp files which may interfere while installing a particular app on your PC. To resolve this issue and free up space on your computer, it is recommended to delete all the junk and temp files. You need to use Advanced System Optimizer to help you achieve this.

Advanced System Optimizer is the top junk-cleaning application for computers. It offers a speedy, affordable solution to your Windows optimization needs. Clear the hard disc to improve computer performance. If you remove superfluous and undesirable files from your storage, your PC will operate more quickly with quicker responsiveness and load speeds.

By deleting cookies and browsing history, encrypting private information to protect it from prying eyes, and permanently deleting data, this best PC cleaner may help you safeguard your privacy. Data backups of sensitive files, including movies, audio files, photographs, and documents, are also made in addition to retrieving lost data.

The Final Word: “This Installation Is Forbidden by System Policy” Error

Errors during Windows installation can be very aggravating. You see problem warnings such as “This installation is Forbidden by system policy” just as you’re ready to download a cool app. The good news is that you may use the Microsoft Program Install and Uninstall Troubleshooter to fix most installation problems. Otherwise, you should be able to address the problem at hand using the other techniques we’ve discussed.

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