>>>I'm on the verge of purchasing a 64-bit Windows 10 pc (home version)...12 gb ram, but I'm wondering what antivirus program is the best to put on there. I thought I read somewhere here that Kaspersky had some problems with VFP..
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>>>Is there one product that's considered best? I recently had some compiling error problems on my old XP pc due to Avast, and I don't want to run into those kind of problems anymore.
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>>>Could use the advice...
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>>All versions of Windows since Windows 7 come with built-in or freely downloadable antivirus. It's called Windows Defender in Windows 10. Those of my clients using it have not been infected (to anyone's knowledge, FWIW). The built-in Microsoft product seems to be fairly low on resource use and is not intrusive in normal usage.
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>Al, how many of your client computers running Defender software has caught viruses i.e. recognized and quarantined viruses? What has the detection rate been like? Would the detected items have posed a real threat? i.e. I get occasional emails with virus-infected attachments but I would never open them anyway.
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>Personally I like ESET Smart Security but I don't use the AV, I use only the firewall. For AV I would recommend what I think is the most thorough AV out there; Emsisoft - https://www.emsisoft.com/en/ (although I don't use it in real-time mode, just weekly or monthly scans). Malwarebytes also comes recommended but again I run it manually on a schedule.

ISTR only a couple of machines with Defender quarantining stuff, less than 5 items each. My business clients using it typically visit few sites, and even fewer that are not business-related, because of company policies.

Most of my clients have good antispam/AV at their mail providers so e-mail doesn't seem to be much of a threat any more. Are they getting infected? I can't prove the negative, but I see no behaviour consistent with infections.

I have several clients using Trend WFBS, it catches stuff from time to time. One client using Symantec Endpoint Protection and Exchange e-mail protection, sometimes it finds stuff too.

I have one client managed by someone other than me that's using ESET with good results AFAIK.

For a number of years any client home computers being used by children 8 - 20 odd years old were always infected no matter what kind of AV was on them (i.e. XP era)

Malwarebytes I've found to be more a tool to use after an infection is found. I believe the paid version can have a resident component but I'm leery of running it as well as a good AV suite. It used to be that AV suites ignored the grayware that Malwarebytes removed but they're getting better at stopping that too.