Mac - can't scroll using track-pad - no frozen panes - no problem with trackpad

Dear Forum,

I would be really grateful for a little help here as I have been trying to search for a solution to this problem.
i have a MBP with no F14 key.

My table has no frozen panes, the trackpad scroll works on the same table on another Mac.
My mousepad works perfectly scrolling other applications.
The arrow keys work OK, but as my Excel table has 2000 rows and 50 columns ...

I hope this is enough information.

Thanks,
Hanne

Solution (should have thought about this first):
I closed Excel down completely - now my scroll works.

Hanne