Yesterday Malwarebytes failed to respond so I took your advice to Paulleus,Monday,5.28 am,used the support tool to clean and reinstall MB which appeared to complete successfully. However,when I went to scan a file,MB still failed to respond and Windows will not open the MB icon on my desktop.
The only thing I can think of that may have something to do with this is that I downloaded a file from openload.co on Thursday,despite getting a MB notification of possible riskware from that site.
I am enclosing my MB results file.
mbst-grab-results.zip