I did just get the info from a new client that is using excel 2013 that instead of 1 instance, 2 instances are opened of the workbook. However one instance seems to be empty and the other one does have the workbook. The strange thing on top of that is that the “empty” instance can however show a print preview. When closing down the “empty” instance it does however request to save the file. If clicking cancel then the only way to exit seems to kill excel. Any ideas what is happening that I could tell my client ?