Is Free Anti-Virus reliable?

[IAEInferno]

I'm planning on using a free anti-virus program and I don't know what would be a good one. Give me a recommendation for free anti-virus please.

 

[Plumboby]

the best anti virus is windows defender built in to windows10 any free anti virus u get what u dont pay for not worth the hassle where defender is built into ur os always upto date it good i run defender on all of my sets ups personally free anti virus software should be banned as most of the stuff is more vunerable to be hacked

 

[Jasjar]

Windows Defender misses more viruses that a normal free antivirus, it`s not perfect. Good free antiviruses are Malwarebytes free and Avast. Malwarebytes free has no real time protection while avast does. I use them both; I use Malwarebytes for scanning and I use Avast for real time protection.

 

[shmu26]

AVG free is good
best free is probably Qihoo 360, because of behavior blockers and multiple antivirus engines