Nessus Agent Tray App.exe is part of a product called known as Nessus Agent System Tray App and the developer is Tenable .
If you think that this file contains a virus or another malware, please download a virus scanner.
If Nessus Agent Tray App.exe is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Installing an antivirus is recommended.
Not all processes can be uninstalled without the help of a 3rd party tool, especially malware. To see if it can be uninstalled, first go to Start > Control Panel > Add/Remove programs and select Nessus Agent System Tray App from the list to remove the process Nessus Agent Tray App.exe from your computer.
If you have any problems with Nessus Agent Tray App.exe, you may try using a registry cleaner or a speed-up software to check, analyze, and fix problems that are affecting the performance of your computer.
You may try contacting Tenable, the developer of Nessus Agent Tray App.exe and ask for more information.