(Fixed) The Malwarebytes team are aware. Here is a quick temporary fix.
For those of us who rushed to install the Windows 10 Creators Update (via the Windows 10 Update Assistant or Media Creation Tool), you might have noticed that if you install and use Malwarebytes, it disables Windows Defender instead of working alongside it. This was not the case when using previous versions of Windows.
You can fix this by simply changing a setting in Malwarebytes:
- Open Malwarebytes.
- Choose Settings.
- Scroll down to Windows Action Center.
- Then click on ‘Never register Malwarebytes in the Windows Action Center’.
- (Although not necessary, we recommend you reboot your system for good measure.)
You will then see that Windows Defender is working again, and so too is Malwarebytes (instead of just the latter). Problem solved.
UPDATE – Apr 12, 2017: Malwarebytes have now released a fix for this. You should receive it automatically, and your Malwarebytes 3.0 About screen should show the Component package version: 1.0.103.
Update: 2019. For the record, Windows Defender is now called Windows Security.