The so called keygen doesn't work.
"Error on pre-activation!. Try to manually stop the service MBAMService".
How the hell am I supposed to stop a service for a program that isn't even installed? Stupid programmers. Why do you show the same error message regardless of the exception that was actually thrown?!
PS: here's how to fix it.
If you're also getting that error, it means something went wrong and your MBAM won't get cracked.
1. Install your MBAM program;
2. Usually this should ask for a computer restart. Agree and continue (if it doesn't ask for one, I suggest restarting it yourself after the installation);
3. When you're back into Windows, MBAM should start automatically; right click on the system tray icon and click on "Quit Malwarebytes";
4. Edit your hosts file (from C:\Windows\System32\drivers\etc) and add the following text, on a new line, at the end (or uncomment it if it's already there with a '#' in front): 0.0.0.0 keystone.mwbsys.com
5. Open up Malwarebytes and close any error messages that might appear;
6. The program should show up as activated and now you just need to setup your exclusions (Settings -> Exclusions). Add your hosts file to the exclusion list (C:\Windows\System32\drivers\etc\hosts);
This is how it worked for me. Tested with Malwarebytes 3.6.1.