inst_key.exe is part of a product called known as QuickTest Professional (Debug) and the developer is Mercury Interactive (Israel) Ltd. .
If you think that this file contains a virus or another malware, please download a virus scanner.
If inst_key.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 QuickTest Professional (Debug) from the list to remove the process inst_key.exe from your computer.
If you have any problems with inst_key.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 Mercury Interactive (Israel) Ltd., the developer of inst_key.exe and ask for more information.