Short bio

Trojan.BlockAV is Malwarebytes’ generic detection name for Trojans that block internet access for Anti-Virus programs on Windows systems.


Trojan.BlockAV hinders the online operation of security software. This  can be done to prevent the software from fetching updates or even to prevent it from checking definitions in cloud-based antiviruses.


Malwarebytes protects users from Trojan.BlockAV by using real-time protection.

block Trojan.BlockAV

Malwarebytes blocks Trojan.BlockAV

Home remediation

Malwarebytes can detect and remove Trojan.BlockAV without further user interaction.

  1. Please download Malwarebytes to your desktop.
  2. Double-click MBSetup.exe and follow the prompts to install the program.
  3. When your Malwarebytes for Windows installation completes, the program opens to the Welcome to Malwarebytes screen.
  4. Click on the Get started button.
  5. Click Scan to start a Threat Scan.
  6. Click Quarantine to remove the found threats.
  7. Reboot the system if prompted to complete the removal process.

Business remediation

How to remove Trojan.BlockAV with the Malwarebytes Nebula console

You can use the Malwarebytes Anti-Malware Nebula console to scan endpoints.

endpoint menu Nebula endpoint tasks menu

Choose the Scan + Quarantine option. Afterwards you can check the Detections page to see which threats were found.

Nebula detections

On the Quarantine page you can see which threats were quarantined and restore them if necessary.

Nebula Quarantaine

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