With Excel 2003 and earlier, there is a limit to the number of unique
items that can be displayed in the filter drop-down - this is 1000
unique items. You can still filter by using Custom ... and then
selecting Less than, or Greater than etc. For dates, you could put a
formula in a helper column which just gave you the month, for example,
then by selecting March on that column you would see more of your
dates in the filter drop-down of the date column.

Hope this helps.

Pete

On Nov 7, 6:29*pm, dls61721
wrote:
I have a spreadsheet with 5 columns (A-E) and almost 26,000 rows. *I found a
problem yesterday when trying to filter a column. *I tried to filter out a
date of 11/2/2008 and no records were filtered with that date. *Other dates
work, but in reviewing the drop down list on the header I also noted other
dates missing. *A review of all records did however, show them present. *In
an attempt to determine if they were entered incorrectly I sorted by that
column and the missing dates show up in date order properly. *I've tried
re-entering those dates, changing to serial number and back to date and even
copied formatting from working rows, but to no avail. *Is there a size limit
to auto filter? *Any suggestions other than putting in Access will be greatly
appreciated:)