Eicar txt file string not supported by Avast 1489

X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*
when I copy/paste this nstring in a notepad file and save it on a desktop, it is not recognized by the resident shield. I’ve tested on Win 7 and Win 8 both on 64 bits. I have even tried to open the file normally, not detected! I have all shields on and set it to screen all files. If you do an ondemand scan on the file it is detected! Comodo’s resident shield was detecting it right away. Why is Avast not rendering?

If I remember correctly, *.txt files are in default exclusions - as they cannot harm your computer.

Hopefully you’re not running COMODO antivirus at the same time.