btstackserver.exe is a process that belongs to the Bluetooth Stack COM Server from Widcomm Inc. This process is needed to ensure that the product above is working properly.
The btstackserver.exe process which runs as a service is used by your computer to communicate with bluetooth devices like bluetooth-capable mobile phones. Its name stands for Bluetooth Stack COM Server. If you use Bluetooth devices to connect to your computer, even if occasionally, you should leave this process running otherwise if you do not, it can be safely terminated.
btstackserver.exe is flagged as a system process and is generally not considered to be a security risk. However, removing Bluetooth Stack may adversely impact your system. Btstackserver.exe process is registered to WidComm.