Make sure Calculation is set to Automatic

Tools Options Calculation tab select Automatic


"Steve" wrote:

Hi there -

I use the "networkdays" function in a number of my workbooks. One of these
workbooks is one that I use every day. Today, when I opened that file, the
networkdays function was no longer working. It does not show up as function
recognized by my version of Excel anymore.

The "Analysis ToolPak" Add-in **is** installed on this machine, and I just
ran a "detect and repair" operation and windows found no errors.

Any thoughts?