FileMaker Pro or FileMaker Pro Advanced:
Windows:
Select Help menu option and then “About FileMaker Pro”. The version will be displayed in this dialog.
OS X:
Select the FileMaker Pro/Advanced menu option and then “About FileMaker Pro”. The version will be displayed in this dialog.
FileMaker Server or FileMaker Server Advanced
For both operating systems open the FileMaker Server Admin Console Start Page (https://[host]:16000).
Under Software Update, the Current Installed Version will be displayed.