Don't know of a published limitation. If you are saying that the 8
column/10000 list version worked on other computers, that would be an
indication it isn't a built in limitation of Excel, but may be constrained
by memory or some other local PC factor.

--
Regards,
Tom Ogilvy

"Kurt" wrote in message
...
I have a plan with approx 1.200 titles and 70 columns.
In 8 columns I have datavalidating with a drop-dovn list. (That gives
approx 10.000 drop-down lists).
My problem is that the drop-down list dissapeared when I expanded from 4
to 8 columns with drop-down lists.
The drop-down list works fine in a previous version and in other
worksheets.
Is there a limit to how many it is possible to validate?