With Excel's 2007 Extension Hardening, all of the output files using <cfcontent type="application/msexcel"> generates a warning, and often the warning doesn't come to the forefront. My users have demanded a new solution.
The POIUtility.cfc worked, except the limited CSS (row-level only) isn't acceptable. Is there another, simpler, more powerful utility out there? Even a paid solution would work.
Did I just happen, after the last few years, to encounter the first group unwilling to click "Yes" to an extra prompt?!