Are you finding perfproc.dll just press download button to get your perfproc.dll file.
If some software in your windows OS wants perfproc.dll your operating system will ask for DLL file. When that DLL file is not available you will get this error.
If you have moved your file or changed the name of dll file you will get this error.
You will mostly see there errors when you dll file is missing:
If you need perfproc.dll Download it right now and install it into your system to fix the error as soon as possible. just Install perfproc.dll and fix your error.