If so then please help me test this.
The attached, very simple, workbook has a timer that’s started in Workbook_Open and when the timer is fired it should display a message. It works in 32-bit Excel 2010, but someone I work with says it doesn’t in 64-bit 365 Pro plus.
Please go to Workbook_Open, change the time to a couple of minutes from now, close and reopen the workbook.
Is the message generated?