3 of 3 people found this helpful
Could the window be opening but opening off screen?
I have non-Filemaker application where it sometimes opens up off screen. I get it back through this sequence:
Hold the shift key, right click on the task bar icon for the open application and choose “move” then use the arrow keys to move the window to the primary display.
This fixed my issue... The window was reduced to the minimize, maximize & closed button and off screen. After bringing it on screen I clicked the maximize button to get the window back to normal.