I have been asking myself this question for a while now, so I hope it's not inappropriate for me to post here. Desktop: Dell XPS 8700, Windows 10 Pro 64 bit fully updated; laptop: Dell Inspiron 5537, Windows 10 Home 64 bit fully updated; smartphone: Samsung Galaxy S5, T-Mobile, fully updated.
For some time now I've been using Avast Internet Security, Premier version, and Malwarebytes Premium, on 3 devices each (desktop, laptop and smartphone). In that time I've had no problems with malware or viruses, or with the operation of those products. Of late, Avast has been offering add-ons (at extra cost). I have declined those (though I was and still am considering using a password manager). I did notice that their "sales division" (is it still a separate company, like Digital River?) is quite happy to continue billing for overlapping licenses, and seems unwilling to give credit for accidental overlaps. That objectionable practice is, I think, not confined to Avast. For years also, I've been using CCleaner to get rid of Internet tempfiles and the like (but NEVER for tinkering with the Registry - on the VERY rare occasions when a Registry edit is required, I do it by hand, fully documented so I know exactly what was done and can undo it if necessary).
So I am looking for information and suggestions on the pros and cons of ditching Avast Premier, next time it comes up for renewal, and allowing Windows Defender to take over. At present the Speccy report tells me that Avast and Malwarebytes are active, and Windows Defender is of course disabled. I may say that for me security is primary, and saving money secondary, in this context. I may also say I haven't noticed anything not working, but perhaps I just don't know enough to detect such things.
I have a similar question on behalf of a friend, of limited computer skills, for whose security I am therefore by default partly responsible. He has a fairly new (2 years) HP Envy desktop - I don't know the model number, but it has an i5 6400 Skylake 14 nm processor at 2.70 GHz, 12 GB of RAM and a 2 TB hard drive, running Windows 10 Home version 1709. I just now managed, with difficulty, to install the most recent Cumulative Update (KB4089848). His AV program is Webroot SecureAnywhere, installed by Best Buy/Geek Squad where he bought the computer. His paid Webroot subscription runs until September 15, 2019. I did not find Webroot on the "avcomparatives" site. I am proposing that he install Malwarebytes 3 Premium with real-time protection enabled, and leave the Webroot alone for the time being (especially since he has already paid for it). Suggestions very welcome for this situation too.
EDIT - most curious event! I posted this last night, and this morning got an E-mail from Avast saying they want me back! I haven't left yet, my current subscription runs until September . . .
Thanks as always for enlightenment.
Edited by saluqi, 29 March 2018 - 11:21 AM.