FileMaker host and client compatibility overview

18: https://www.filemaker.com/products/filemaker-server/18-technical-specifications.html

FileMaker Server 18 supports the following clients:

• FileMaker Pro 16
• FileMaker Pro 18, 17, and 16 Advanced (not 15)

17: https://www.filemaker.com/products/filemaker-server/17-technical-specifications.html

FileMaker Server 17 supports the following clients:

• FileMaker Pro 16 and 15
• FileMaker Pro 17, 16, and 15 Advanced

 

FMP 16 can connect to FMS 16, 15, 14
FMP 15 can connect to FMS 16, 15, 14, 13.0.9 (not FMS12) ref1. ref2.
FMP 14 can connect to FMS 16, 15, 14, 13, 12 ref.
FMP 13 can connect to FMS 14, 13, 12
FMP 12 can connect to FMS 14, 13, 12

FMS 16 can serve FMP 16, 15, 14 doc. not published
FMS 15 can serve FMP 16, 15, 14, 13.0.9 ref.
FMS 14 can serve FMP 16, 15, 14, 13, 12 ref.
FMS 13 can serve FMP 14, 13, 12 ref.
FMS 12 can serve FMP 14, 13, 12 ref.