I guess asking in the Malwarebytes forum might do you some good because they are supposed to be the experts.
Maybe this question should be forwarded or moved to the virus / security forum.
Either it is a false positive or your computer already was infected and is infecting the updates.
Have you received the same results from another anti-virus program?
Which virus does Malwarebytes detect? (I am not asking you to post a log.)
I am operating under the assumption that Microsoft doesn't make mistakes and transmit viruses.
I am trying malwarebytes.com and when I ran the scan, it came back with 16 of the updates containing malware. These are updates that windows installs automatically, what am I supposed to do now?