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