While looking at the list, I found an application that I had trialed some time ago, but decided not to purchase. To my surprise, I found it running. Hmm, I thought, did I really buy it? Or didn't I uninstall it?
No. The application was still installed, and it had a process running on my system. I started it up and discovered that it was running in order to tell me that the demo period had expired. With it selected in Windows Defender, I selected "End Process" and then went to Control Panel to uninstall the application, and that was that.
Other useful information is the file name and path, whether it's part of Windows, and the Process ID (or PID) the application is running under.
The Software Explorer in Defender is very handy for identifying applications running on the PC. If you find one that you can't identify from the description and program location, often a Google search for the executable’s name will provide more information. Try to avoid stopping or uninstalling processes or applications that appear under the PC manufacturer's name, as doing so may have unintended side effects like losing the keyboard functionality.
Now we have looked for trojans, viruses, and worms on the hard drive, and we have a handle on the applications running on our PC. Next, let's look for adware and spyware