Setting DisableMergeInstance=1 in registry doesn't work. Is there a way to notify Microsoft about this bug?

Mel Calucin 81 Reputation points
2022-04-14T12:29:16.787+00:00

Setting DisableMergeInstance=1 in registry doesn't work per this document:

https://learn.microsoft.com/en-US/office/troubleshoot/excel/force-excel-to-open-new-instance

I believe I'm on the latest version of Microsoft Excel for 365 MSO.

Is there some place I can log this defect?

Thanks.

Regards

Mel Calucin

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Excel Management
Excel Management
Excel: A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.Management: The act or process of organizing, handling, directing or controlling something.
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Accepted answer
  1. Ceasar Chen_MSFT 4,391 Reputation points
    2022-04-15T05:12:45.837+00:00

    Hi, @Mel Calucin
    Welcome to the Q&A Forum. You can check in the Task Manager to see if there are two Excel programs.
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    If you really don't have two Excel programs, make sure the new DWORD value is 32-bit and binary.
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    Close the registry, open two Excels from the Excel icon.
    Using File Open in the Excel application or double-clicking the file in Windows Explorer will still open in the same instance as designed,
    And this method does not work for opening existing workbooks, only for new workbooks.

    Note: Improper registry modifications can cause serious problems. Therefore, please follow the steps strictly. For further protection, back up the registry before modifying it.


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