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Avast Network Inspector alert: Remote Desktop vulnerability found

This article explains how to resolve the issue if Network Inspector in Avast Antivirus shows the following alert:

  • Remote Desktop vulnerability found

Description

Remote Desktop Protocol (RDP), commonly called Remote Desktop, allows you to connect to your PC from any location. If you see the alert above after running a Network Inspector scan in Avast Antivirus, we have found that your PC's Remote Desktop settings are not secure.

An attacker could connect to your PC and use known vulnerabilities in Microsoft's Remote Desktop Protocol to execute malicious code, or plant malware. An attacker may also attempt to access protected areas of your PC by repeatedly guessing the password (known as a brute-force attack).

Solution

You can resolve this issue by enabling Network Level Authentication on your PC. This ensures that any connection attempts must be authenticated before they can establish a session with the server.

It is not possible to enable Network Level Authentication on systems running Windows XP. If you use Windows XP, we strongly recommend that you upgrade to a later Windows version.

Follow the steps below to enable Network Level Authentication on your PC:

The steps to enable Network Level Authentication vary according to your version of Windows 10. Follow the relevant steps below:

Later versions of Windows 10

  1. Click the Windows Start button and select Settings (the gear icon).
  2. Select the System tile.
  3. Click Remote Desktop in the left panel.
  4. Click Advanced settings.
  5. Tick the box next to Require computers to use Network Level Authentication to connect (recommended).

Network Level Authentication is now enabled, and your PC is protected against unwanted connections via Remote Desktop.

Earlier versions of Windows 10

  1. Click the Windows Start button, start typing control panel to open the search box, then select Control Panel from the search results.
  2. Next to View by, ensure you are using the Category view.
  3. Select the System and Security tile.
  4. Under System, select Allow remote access.
  5. Under Allow remote connections to this computer, ensure the box next to Allow connections only from computers running Remote Desktop with Network Level Authentication (recommended) is ticked.

Network Level Authentication is now enabled, and your PC is protected against unwanted connections via Remote Desktop.

  1. On your keyboard, press the Win key and X key simultaneously, then select Control Panel from the menu that appears.
  2. Next to View by, ensure you are using the Category view.
  3. Select the System and Security tile.
  4. Under System, select Allow remote access.
  5. Under Allow remote connections to this computer, ensure the box next to Allow connections only from computers running Remote Desktop with Network Level Authentication (recommended) is ticked.

Network Level Authentication is now enabled, and your PC is protected against unwanted connections via Remote Desktop.

  1. Click the Windows Start button and select Control Panel.
  2. Next to View by, ensure you are using the Category view.
  3. Select the System and Security tile.
  4. Under System, select Allow remote access.
  5. Ensure that Allow connections only from computers running Remote Desktop with Network Level Authentication (more secure) is selected.

Network Level Authentication is now enabled, and your PC is protected against unwanted connections via Remote Desktop.

  1. Click the Windows Start button, right-click Computer, and select Properties.
  2. Select Remote settings in the left panel.
  3. Ensure that Allow connections only from computers running Remote Desktop with Network Level Authentication (more secure) is selected.

Network Level Authentication is now enabled, and your PC is protected against unwanted connections via Remote Desktop.

  • Avast One 22.x for Windows

  • Avast Premium Security 22.x for Windows
  • Avast Free Antivirus 22.x for Windows
  • Microsoft Windows 11 Home / Pro / Enterprise / Education
  • Microsoft Windows 10 Home / Pro / Enterprise / Education - 32 / 64-bit
  • Microsoft Windows 8.x / Pro / Enterprise - 32 / 64-bit
  • Microsoft Windows 8 / Pro / Enterprise - 32 / 64-bit
  • Microsoft Windows 7 Home Basic / Home Premium / Professional / Enterprise / Ultimate - Service Pack 1 with Convenient Rollup Update, 32 / 64-bit


Updated on: 02/06/2022

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