fdhost.exe is a application which is most likely legit. So, if fdhost.exe is on your system, it is most likely ok, and will NOT be a cause for concern. Even if your PC is clean, it is still recommended to purchase a good antivirus with a good track record, in order to yourself yourself against threats.
Usually, the default name and path where the program is stored is
C:\Program Files\Microsoft SQL Server\MSSQL12.BSSINC\MSSQL\Binn\fdhost.exe.
The MD5 fingerprint for this executable is 1b100b5fc879b899f9ef85392c90a79c.
This program is NOT a Windows service. This is good.
64-bit code has been detected. This program can exploit the full power of a modern computer cpu.
The description stored in the exe is SQL Full Text host.
File version 2014.0120.2000.08 ((SQL14_RTM).140220-1752).
Author Microsoft Corporation.
Intellectual property rights notice Microsoft Corp. All rights reserved..
fdhost.exe has a digital signature. Nowadays the large majority of legit programs are digitally signed.
The digital signature found in fdhost.exe checks out perfectly. This is excellent.
Digital certificate name: Microsoft Corporation
Certificate's issuer name: Microsoft Code Signing PCA
It has an uninstall routine, which is good. si are uninstall.