

Running into it consistently on my own computers made me suspect an add-in or third-party program that was interfering somehow but there doesn’t seem to be any common thread between the programs I run and the ones running on all the computers of other people with the same symptoms. I actually moved all my files from a Synology NAS to my computer as part of troubleshooting a few months ago and was disappointed to discover it didn’t make any difference. At first I thought it only happened when I was clicking on files stored on a network shared folder instead of my local hard drive, as suggested in a few forum posts. In the forums where people have discussed this problem (for example here, here, and here), there have been various theories that have been floated and discarded. Yet I have only rarely heard about it from clients, and there are only scattered reports online. I replaced my desktop computer in part to get a fresh start on this problem it turned up almost immediately and has never left. It has happened to me on my desktop and on several laptops on computers upgraded from Windows 7/8 and computers with clean installs of Windows 10 on computers with Office 2013 and Office 2016. There is very little pattern to when this problem occurs, as far as I can tell from Googling around. Thirty seconds later, out of nowhere, Excel starts up. People have sniffed with Process Explorer and Task Manager and looked at memory use and there is zero indication that anything is proceeding under the hood. During the 30-60 second delay, nothing is happening.All other programs (including Word) are completely normal. If you remember to start Excel first, or if it is already running with another file open, then the clicked file will load immediately. There is no delay if Excel is already running when you double-click the file.There are some strange things about what happens. XLSX spreadsheet file is followed by a 30-60 second delay before the Excel logo appears and the spreadsheet loads normally. On some computers, double-clicking to open a. It happens on Windows 10 computers running Excel 2013 or Excel 2016. This bug only affects a small number of people, but it’s an interesting one because it’s been a problem for almost a year and there’s still no clear understanding of what’s going on. Followup 07/2017: A Possible Fix For The Excel Slow File Opening Bug
