Avast monitoring don't start for no reason

[REDACTED]

When I boot my PC, avast starts up and is on the tray and display the icon,
but monitoring service is in 'OFF' status. So I should turn this on manually.

Sometimes it works fine with 'ON' but many times it is in 'OFF'.

This have happened for about 2-3months.


More info. : Full scanning from Avast had been done, but no results. But still I doubt malware or some serious security problem, so I tried 'Malwarebytes' but it didn't work at all for no reason, even I failed to execute the application(It says 'fail to connect to service').

[bob3160]

When I boot my PC, avast starts up and is on the tray and display the icon,
but monitoring service is in 'OFF' status. So I should turn this on manually.

Sometimes it works fine with 'ON' but many times it is in 'OFF'.

This have happened for about 2-3months.


More info. : Full scanning from Avast had been done, but no results. But still I doubt malware or some serious security problem, so I tried 'Malwarebytes' but it didn't work at all for no reason, even I failed to execute the application(It says 'fail to connect to service').

Try the following:

Repair Avast:
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204
If Repair doesn't fix the problem, try the following:
Clean Install of Avast:
https://goo.gl/4Ptzkf