Since Windows 10, there is a built in file handler for PDF files. Unfortunately, fileseek seems not be able, to use it (In my case, fileseek works properly, if I have installed "Adobe iFilter 9 x64", but I don't want to have this installed (Very slow indexing (compared to Windows internal filter) and very old software.
Would it be possible for you, to make FILESEEK compatible with Windows internal "Reader Search Handler") ?