to remove unwanted objects.
(only get the free version because the upgrade trial period will expire)
If suspicious objects are found you should do a custom full scan which can take a couple of hours
Always accept updates
It took about 15 minutes to complete on my laptop.
alternative to using Windows Explorer
ETA: if there is a stubborn suspicious object detected by Malwarebytes, try running Malwarebytes with all Custom options chosen after starting in Windows Safe Mode to remove it
To run Windows in Safe Mode:
Turn on pc or restart pc and keep tapping the F8 key
When screen shows Windows Advanced options, scroll with arrow key to Safe Mode and click enter
(do this only when you will not be needing your device for several hours)