Prevent New Instances of Excel 365

pliskers

Active Member
Joined
Sep 26, 2002
Messages
404
Office Version
  1. 2016
Platform
  1. Windows
I am trying to prevent Excel 365 from opening a new instance of the application when I double click on a file name in Windows Explorer. I've seen various solutions posted for earlier versions, related to the Option to "Show all windows in the taskbar", but that option does not appear to be available in Excel 365.

I get error messages from the opening of the second instance due to the presence of a Personal.xlsb file that holds my frequently used macros. I'd like all newly opened files to appear in the same instance unless I choose to open a second one.

Is there a way to prevent this from happening?

EDIT:
Just a follow up to be clear: If I use the File-Open method in Excel, the second file will open in the same instance. What I'm looking for is a way to prevent a second instance from opening when I have one file already open and double-click a second file in Windows Explorer. That's what I'm inquiring about.
 
Last edited by a moderator:

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ranman256

Well-known Member
Joined
Jun 17, 2014
Messages
1,969
dbl-clicking the file outside of Excel will begin a new instance. Win-OS is doing it, not excel.
 

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