If your version is smaller than 1.46, then you might get update here: [http://www.malwarebytes.org/mbam-download.php] -------------------------------------------------- Or tweak from moderator: Download and run mbam-clean.exe from here: [http://www.malwarebytes.org/mbam-clean.exe] It will ask to restart your computer once its run, please allow it to do so. Then download Malwarebytes Anti-Malware from here,don't install it just yet: [http://www.besttechie.net/tools/mbam-setup.exe] Then disconnect from Internet (just for your safety). Then temporarily disable your anti-virus, script blocking and/or any other anti-malware real-time protection (that's why I ask you to disconnect from Internet). Then try installing and running MBAM again (any real-time protection could have tried to stop MBAM installation; that's why it was turned off in previous step). -------------------------------------------------- Does it help?