Si la protection ne veut pas se réactiver essayer la procédure suivante (source : Mamwarebytes)  :

Lets us try the following. Start Malwarebytes. Click Settings. Click Protection tab.

Scroll down using the scroll bar to the bottom.

Look for the Startup Options. scroll down a little bit.

Look for the line Enable self-protection early start ( if it shows OFF then slide it to the right to turn ON)

Please have patience when doing this.

Then close the window. Then RESTART windows. Please have patience and allow a minute or so for Windows to settle in when restarted.

Please let me know the Brand-name of antivirus on this machine. Is it McAfee, TrendMicro, Norton / Symantec, Security Essentials, Avast, BitDefender, Kaspersky, or some other brand, which one exactly?

The antivirus may well be silently ( but innocently ) interfering with our real-time protection functions.

Malwarebytes Anti-Malware works well and should run alongside antivirus software without conflicts. In some rare instances, exclusions may need to be set for your specific antivirus product to achieve the best possible system performance.

I suggest putting in trust settings in your antivirus, as follows:

Please “put as Trusted” (i.e., put Trust settings ) for the following MBAM exe files within your Antivirus Software whitelist :

Note: If using a software firewall besides the built in “Windows Firewall” you’ll need to exclude them from it as well

These are the other Malwarebytes Premium files that need to be added to the antivirus exclusions list:

C:\Program Files\Malwarebytes\Anti-Malware\Mbam.exe

C:\Program Files\Malwarebytes\Anti-Malware\MbamPt.exe

C:\Program Files\Malwarebytes\Anti-Malware\assistant.exe

C:\Program Files\Malwarebytes\Anti-Malware\MBAMWsc.exe

C:\Program Files\Malwarebytes\Anti-Malware\mbamtray.exe

C:\Program Files\Malwarebytes\Anti-Malware\MBAMService.exe

Let us try a very special re-install with a interim build, That is a release candidate, verion 3.0.6.1458

It should be a great help for your pc.

Step 1: Uninstall:

1. Uninstall Malwarebytes 3.0 from the Windows Control Panel.

oIf you do not see this program skip this part.

2. Now, Reboot your computer

Step 2: Installation using a special build:

1. Download and Run the Malwarebytes 3.0.6.1458 installer from the link below

oDownload MB306 1458 Installer

Download & save the file first. To either the DESKTOP or to the Download folder.

Click the Download button on the page ( no login needed).

The filename is mb3-setup-consumer-3.0.6.14158

1. Locate the file, mb3-setup-consumer-3.0.6.1458

oBe sure to check your downloads folder if you do not see the file

Then next, do a RIGHT-click on mb3-setup-consumer-3.0.6.1458 and select Run as Administrator and reply YES and allow it to proceed.

• You may see a notification explaining that your existing Malwarebytes Anti-Malware, Malwarebytes Anti-Exploit, or Malwarebytes Anti-Ransomware (Beta) applications need to be uninstalled before you can install Malwarebytes 3.0.

• Press Accept, then follow this prompts on the installer window.

•Malwarebytes will open automatically to the new welcome screen.

•If you have a premium subscription for either Malwarebytes Anti-Malware or Malwarebytes Anti-Exploit Proceed to Activation. (if it shoiws Free or trial)

When all completed, please use the Windows Start menu and do a RESTART.

Afterwards, please advise on the situation.

You need to do just one more upgrade. The very latest is 3.0.61469

Start Malwarebytes. Then click Settings. Then click the tab labeled Protection.

scroll down to the area that has “Startup Options”

Look for “Enable self-protection module” and put it so that is OFF.

You also ought to turn off "Enable self-protection early start " ( if you din it on, set it to off).

Then close the window.

Now you are ready to really truly do a new Upgrade.

Upgrade-in-place Installation:

1. Download and Run the Malwarebytes 3.0.6 installer from the link below

oDownload MB3 Installer

2. Locate and double click the file, mb3-setup-consumer.exe, to run the installer:

oBe sure to check your downloads folder if you do not see the file

o You may see a notification explaining that your existing Malwarebytes Anti-Malware, Malwarebytes Anti-Exploit, or Malwarebytes Anti-Ransomware (Beta) applications need to be uninstalled before you can install Malwarebytes 3.0.

3. Press Accept, then follow this prompts on the installer window.

4.Malwarebytes will open automatically to the new welcome screen.

Start Malwarebytes. Click on the Check for Updates button ( if you see it. If not, that means it’s good) and allow it a bit to update.

When all completed, please use the Windows Start menu and do a RESTART.