How To Manually Download Definition Updates For Malwarebytes Anti-Malware

Want to know how to download latest database update of Malwarebytes Anti-Malware for offline install? We will show you two simple ways to do that.

Off-late, I am getting a lot of questions asking how they can manually download the latest definition for Malwarebytes’ Anti-Malware. I use the free version of Malwarebytes’ Anti-Malware (MBAM) to occasionally scan my computer for malware and other threats. I have always used the built-in online updater to get the latest definition before scanning. After getting all these requests, I started my quest to find out, how to get the latest database of Malwarebytes’ Anti-Malware on a computer that cannot access the Internet? I found two simple ways by which the mission can be accomplished!

The first step to manually update MBAM requires access to a working computer. This PC should have access to the Internet and should have a copy of Malwarebytes’ Anti-Malware installed. After updating the copy of Anti-Malware from the Internet in this computer, open the database location as stated below. Copy the database file “rules.ref” to your PC in the same database location according to your operating system.

You can manually copy the database from here using a flash drive or CD to the PC which needs the latest definition. In the target computer, you have to paste the definition update in the same location as stated below.

  • For Windows XP and 2000 users, open and copy from the following location:C:\Documents and Settings\All Users\Application Data\Malwarebytes\Malwarebytes' Anti-Malware\rules.ref
  • Windows Vista and Windows 7 users, open and copy from the following location:C:\ProgramData\Malwarebytes\Malwarebytes' Anti-Malware\rules.ref
Note: Starting with Malwarebytes Anti-Malware 1.60, you must also copy the file database.conf located within the Configuration folder which is present in the same folder as rules.ref listed above.


If the first step is not possible, you can do a manual update of MBAM definition files using mbam-rules.exe file. Click on the download link below (you will get a Google redirect page, don’t worry, just click on the mbam-rules.exe link to continue there.)

Download mbam-rules.exe | Mirror for mbam-rules.exe

Please NOTE: The second method of MBAM manual update will always be not the latest as compared to the updates from within the program or using the first method. Furthermore, the second method of downloading the mbam-rules.exe to manually update the definitions now only works with versions of Malwarebytes Anti-Malware before 1.60. So, if you’re using Malwarebytes Anti-Malware 1.60, you’ve to follow the first method to manually update the program.

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