If you’re encountering the ‘This installation is forbidden by system policy’ error while trying to install or run software on Windows 11, you’re likely dealing with a security restriction set by your system’s policies. This guide will walk you through the steps to resolve this issue, enabling you to install or run your programs smoothly. Before proceeding, ensure you have administrator privileges on your Windows account, as most fixes require admin rights. Also, back up important data as some steps involve editing system settings or the registry.
What You’ll Need
- Administrator access to your Windows 11 PC
- Basic knowledge of Windows settings and the Registry Editor (recommended but not mandatory)
- Optional: A backup of your registry in case you need to restore it
Step-by-Step
- Open Local Group Policy Editor: Press Win + R, type
gpedit.msc, and hit Enter. If you receive an error saying the editor isn’t available, proceed to the registry method below. - Navigate to the Software Restriction Policies: In the Group Policy Editor, go to Computer Configuration > Windows Settings > Security Settings > Software Restriction Policies. If no policies are listed, you’ll need to create new ones.
- Create or modify policies: Right-click on Software Restriction Policies and select New Software Restriction Policies. Then, double-click on Additional Rules.
- Allow the program or publisher: Find the rule that blocks your application. If none exists, create a new rule by right-clicking in the window and selecting New Path Rule. Set the path to the application’s executable file, and set the security level to Unrestricted.
- Apply changes and restart: Click Apply and OK. Restart your computer to ensure the policies take effect.
- If Group Policy Editor is unavailable, edit the Registry: Press Win + R, type
regedit, and press Enter. Navigate to HKEY_LOCAL_MACHINE\
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How to Fix the This Installation Is Forbidden By System Policy Error in Windows 11