Product and version (e.g. FileMaker Pro 14.0.3)
FileMaker 17 Server 17.02 and Client 17.02
OS and version - Client - Windows 10 - Server Windows 2016 Standard
A one record maintenance table used to hold HTML data for email merging. The client called to say the record was being modified by the same user who was trying to modify the record. See image.
User logged out all sessions closed on the server, and the record still showed as locked. Checked command line showed all sessions closed.
Of course, the file would not close on the server, so a hard reboot. Set service to manual and opened using FM Client luckily the file verified.