This clock icon shows up in Windows Explorer when I list my Excel files. It's an icon overlay of the normal Excel "X" icon but includes a tiny clock. It seems to be on files that haven't been accessed for awhile. I'm just trying to understand what this clock means. I can still access the Excel files. I couldn't find anything online that explained what the clock overlay means. Maybe someone else has seen this and understands what the purpose of it is for. Thanks for any info that you have on this mystery.