A nice way to test if your antivirus is working is this EICAR test “European Institute for Computer Antivirus Research.”
How do you do this? Proceed as follows:
1. Copy what is between the lines below into notepad :
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X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*
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2. Save as EICAR.COM
If your antivirus doesn’t respond to this, it won’t work.
This test is completely harmless.
See also; https://en.wikipedia.org/wiki/EICAR_test_file