Hello! First off I would like to reference this article. This seems to be a near identical problem I have. I am using the Malwarebytes cloud to deploy endpoints. I currently have 5 total endpoints to deploy. On 2 of the computers (Group A), the tray icon is there and you can start a system scan that way. On the other 3 (Group B), it is missing.  I have tried to run the malwarebytes cleanup utility and it seemed to have worked great. I reinstalled the product on the same 3 machine