Second, you can manually uninstall the old version first, and then install the new version (following the same procedure as above to download and install the trial version). Your license information will be preserved. Run that and it should uninstall the old version, then you restart your system and it’ll install the current version. First, you can visit and click the link to download the free trial version. You probably ran into the first problem, in that the automatic update didn’t work. It’s also remotely possible that the popup isn’t really from Malwarebytes, it’s easy for malware to fake legitimate notifications. There are two problems with so-called automatic updating, one they don’t always work well, and two the automatic part may not even kick off – meaning you don’t get an upgrade notification. That, along with keeping your operating system and installed software programs is a prudent first step at keeping your digital life secure. You definitely want to always be using the latest version of your protection programs. If I close it, I get a “scan complete” pop-up that appears to be from Malware and the “Version update available” pop-up always comes back a little later.

When I clicked “download and install”, it seemed to be working OK but it failed at the end, complaining that I hadn’t uninstalled the previous version. I have a pop-up at right lower corner on my Windows 10 computer from Malwarebytes saying “Version update available”.

Malwarebytes manual update 2017