NOTE: This guide is for version 4.0.4, you might be installing or updating a newer version than this but the guide should still be relevant.
STEP 1. Download Malwarebytes Anti-Malware installation file for Windows which is called MBSetup.exe
STEP 2. Once the file has downloaded, run the file to start the installation.
Note: If the Open File – Security Warning appears, click Yes
STEP 3. Select whether you are installing on a Personal Computer or Work Computer and then click on Continue
STEP 7. You will then be prompted to enter your email address to signup for the Malwarebytes newsletter which is optional. Then click on Open Malwarebytes to continue.
Want to know what the differences are between Malwarebytes Anti-Malware Free and Premium?
If you want to downgrade to just the free version of Malwarebytes, refer to this guide: How to Deactivate Premium Trial in Malwarebytes
For further help with scanning your computer, go look at Scan Your Computer For Malware with MalwareBytes Anti-Malware