searchprotocolhost.exe is a process associated with Microsoft® Windows® Operating System from Microsoft Corporation.
It is an executable software module that may have been preinstalled on your computer. The exact folder location for this file is also listed below, always verify the file and location as spyware and virus writers often use similiar named files and place them elsewhere on your computer.
You may see this appear in your tasklist if you recently installed Microsoft software (like Microsoft Office, etc.). This software file is considered safe and is not virus or spyware related.