Avast Pro and Windows Defender

[bilnrobn12]

I've always believed that only one AV should be used at a time, but am wondering if it is OK, (and if so of any advantage), to run both Avast Pro and Defender together on the one computer?

Bill in Oz

[Asyn]

No, imo. Which OS..?

[Rednose]

Hi Bill

First and for all : Windows Defender on Win 8 and 10 is full Anti Virus, while on Win XP, Vista and 7 it is an aditional Anti Spyware.

Windows Defender on Win 8 and 10 : Running two full Anti Virus programs is bad idea https://blog.kaspersky.com/multiple-antivirus-programs-bad-idea/
Windows Defender on Win XP, Vista and 7 : It doesn't do that much.

A better option would be to replace it by Malwarebytes Anti-Malware.

Greetz, Red.