FastnetUI.exe is part of a product called known as Fastnet Application and the developer is Waters MS Technologies .
If you think that this file contains a virus or another malware, please download a virus scanner.
If FastnetUI.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 Fastnet Application from the list to remove the process FastnetUI.exe from your computer.
If you have any problems with FastnetUI.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 Waters MS Technologies, the developer of FastnetUI.exe and ask for more information.