How to Block Unwanted App or Malware Installation on Windows 11 PC

Authored by: Support.com Tech Pro Team

Blocking Unwanted App or Malware Installation on Windows 11 PC

Preventing unwanted app or malware installations on your Windows 11 PC is essential for maintaining your system's security. Here's a step-by-step guide on how to block such installations:

Using Windows Security Features:

Click on the "Start" button to open the Start Menu.

Select "Settings" (the gear icon) to open the Windows Settings.

In the Windows Settings window, click on "Privacy & Security."

In the left sidebar, choose "Windows Security."

Click on "Virus & threat protection."

Under "Check apps and files," select "Block (recommended)."

This setting enhances your system's defense against unwanted app installations and potential malware.

Using Group Policy Editor:

Press "Win + R" to open the Run dialog.

Type "gpedit.msc" and press "Enter" to open the Group Policy Editor.

In the Group Policy Editor window, navigate to "Computer Configuration" > "Administrative Templates" > "Windows Components" > "Windows Defender Antivirus."

In the right pane, double-click on "Turn off Windows Defender Antivirus."

Choose "Enabled" and click "Apply."

This policy disables Windows Defender Antivirus, which may block unwanted installations.

Next, navigate to "Computer Configuration" > "Administrative Templates" > "System" > "Don't run specified Windows applications."

Double-click on "Don't run specified Windows applications" and select "Enabled."

Click on the "Show" button and add the applications you want to block by entering their file names (e.g., app.exe). Click "OK" to confirm.

This policy prevents the specified applications from running.

After configuring these policies, unwanted app installations should be blocked, and system changes are limited.

These steps help enhance the security of your Windows 11 PC by blocking unwanted app installations and potential malware threats. It's important to maintain your system's security settings and regularly update your antivirus software for effective protection.

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