W10 Home (Fully Patched), MS Office Pro Plus 2016, Malwarebytes (Premium) v188.8.131.5265 (Component Pkg v1.0.627, Update Pkg v1.0.12785, no exclusions), BitdefenderFree
Prior to installing v3.8.3, the above config was stable for at least 16 months. During this time, Malwarebytes and BitdefenderFree coexisted fine, with no system problems and Malwarebytes went through at least one update. However, as soon as Malwarebytes updated to v3.8.3, an intermittent Outlook 2016 problem manifested.
Basically, every few days, the Outlook 2016 Send/Receive process will hang partway