Here’s a quick trick to test your antivirus software. It’s one of the many nifty tricks you can accomplish using Notepad on your PC.
Start by typing Notepad into your search box and clicking on the result.
Type X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H* into notepad.
Save the file as test.exe
If your antivirus is working, it should detect the file almost immediately. If it does not, try double-clicking the new file to start it. Your security software ought to catch it then. If not, it may be time to think about additional protection.