In case you are not sure when your ESET Cyber Security software is due for renewal. There is a way to check the expiration date via the ESET application installed on your computer. This is a guide to check ESET’s expiration date on a Mac. 1. First open ESET. There are two ways to do this:Method 1: Click on Finder, select Applications folder, and double click ESET from the list of Apps. Method 2: Click on the ESET icon from the top menu bar and select Open ESET Cyber Security. 2. Under Home tab, check License Valid Until date. Or you can select Help from the left side of the ESET window. Under Product and License Information. The License Validity section will show the expiration date.