How to prevent files from opening automatically in Excel
https://learn.microsoft.com/en-us/office/troubleshoot/excel/files-open-automatically
WEBMay 5, 2022 · To remove files from the XLStart folder and the alternative startup folders, follow these steps: Select Start, and then select Run. In the Open box, type one of the following and press Enter: For Office365 or 2019 32 bit: C:\Program Files (x86)\Microsoft Office\root\xx\XLSTART. For Office365 or 2019 64 bit:
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