Forum Discussion
DateValue function
The quickest and best way to get a constructive answer is to attach an example Excel file. Click "browse" at the bottom of the reply window, or upload the file to a file-sharing website and post the download URL.
At a minimum, you should show us what is in B3 and what does ISTEXT(B3) return. Typically, a #VALUE error means one of two things: B3 contains a number, not text; or Excel cannot recognize the form of the text as a date, based on the current system configuration.
Note the latter: "current system confirguration". That might have changed, unbeknownst to you, especially if you use Office 365 (based on other users' experience).
JoeUser2004 The problem is that these formulas worked for years, but when I opened the file again after a year, the formulae now don't work. I didn't change anything at all in the workbook. It seems to me, therefore, that something has changed in Excel. When I get to my computer I'll send you the info you asked for. Thanks much for trying to help.
Kindest regards,
C. Aeschliman