Very slow scans with newest Malwarebytes! in Malwarebytes 3 Support Forum Posted 7 hours ago 2 hours ago, Kiff said: Over 17 hours continuous scanning... really? As you read in the other posts, It is recommended to only do threat scans. I would suggest cleaning temp files and if laptop, be plugged in to power. Also during a manual scan, Do not try do do anything else while scan is running.