I have now turned off MB Web Protection but do not like orange admonition . I have been struggling with this for a week now, following suggestions on Avast thread which have not helped. Zdenal, by 'everything' do you mean, in addition to M'bytes, the problems of frozen/hung computer, inability to access sites, inability to shut down computer correctly. I posted 4 screenshots on Avast and wonder if the two files dated last year could be the problem? See my post above and click on this title Avast Blocking Access to Internet After Update I had no issues while all three were disabled Question I read that old files in Avast were not being removed when the program updated, is this still the case. I'll be happy to explain to him how to to solve the problem.Ĭurrently I have Real Time and Web Protection disabled and just turned on Do Not Disturb after reading your post. I'll appreciate if an responsible WFP developer contact us.

Seems that the MB UDP filtering solution is not compatible with MS recommended solution, but anyway, if you use capture, drop, create and inject new packet scenario for the UDP traffic, it's completely wrong and can cause conflicts with many products.

Problem is just in WebProtection activation process (not under my control, no time for reverse engineering). I can see from driver debugging, that it works, when both components are active (as described above). Then we implemented new solution recommended by Microsoft. Avast had some protection against this before, but it doesn't work every time. We discussed the problem with Microsoft WFP developers, to try to find solution for the problem. But this new one is presented to first driver, captured, dropped, generated again and it can continue indefinitely. It's caused by two WFP drivers, when each capture UDP packet generated by other, drop it and generate new one. We found this problem with several other products. If two products try to capture UDP traffic by Windows WFP technology, a UDP packet loop can occurs if it's not implemented correctly. Malware Bytes is trying to filter the UDP traffic (probbably DNS). Some more technical pieces of information: If I disable Real Site, enable MB WebProterction and then enable Real Site again, everything works well.

I have tested both products several minutes ago, and problem is only in MalwareBytes Web Protection activation process.

I'm responsible for Real Site protection in the Avast product.

Malwarebytes vs avast for mac 2018