No. But they can Conflict with each other. That is why you only have ONE Anti Virus program.
They want to check you Email when it comes in and if two programs are trying to check your email at the same time problems can happen.
You need ONE Anti Virus program and ONE maybe Two Anti Malware programs.
Anti Malware programs do not conflict with Anti Virus or other Ant Malware.
This is what I use:
Windows 10 Built in Anti Virus Windows Defender.
and the Free Version of Malwarebytes. Malwarebytes in an Anti Malware program that finds thing Anti Virus programs miss.
I don't have problems with my current setup, which consists of McAfee LiveSafe Anti-virus suite, Malwarebytes Anti-Malware Premium, Emsisoft Anti-Malware Full Version which uses a dual engine…Bitdefender being the other scanning engine, and Adguard Premium (ad blocker)–all four programs run in real-time.
Malwarebytes 3.0 which was recently released caused major freeze/lock up problems with my computer. Malwarebytes 3.0 is the company's newest version of its anti-malware program, however they added Anti-Exploit and its recently beta tested Anti-Ransomware. I never had a single problem with all my programs running Malwarebytes Anti-Malware 2.0 and Anti-Exploit (free). In fact, I had to uninstall Malwarebytes 3.0 and reinstall 2.0 and Anti-Exploit (Free).
None of my current, real-time, running programs conflict with the others. I also run scans with Junkware Removal Tool, TDSSKiller, HitmanPro, and AdwCleaner. I have no viruses, spyware or malware on my system. I also use CCleaner to keep my system running smooth, and I use its registry cleaner everyday and throughout the day. I've been using CCleaner's registry cleaner for about 10 years too.
Malwarebytes 3.0 is still having a lot of problems. My guess is that it has a lot to do with the recently beta-tested Anti-Ransomware which was added to its anti-malware program. Visit the Malwarebytes 3.0 forum in the link below.
Yes they attack each other here's what happens.
When you install the very first antivirus what it does it secures the root systems of your computer and prevents any other program from invading or trying to take over and control critical components, then when you install the second antivirus it to tries to secure the root of your computer however the first antivirus thinks it's being attacked by malware
Yes,they work against each other. As a rule,you should have only one anti-virus installed.
They can conflict with each other in non malicious ways.