Policy
Suppress file format compatibility dialog box for OpenDocument Spreadsheet format
This policy setting allows you to configure the file format compatibility dialog box when saving a file as an OpenDocument Spreadsheet file in Microsoft Excel. If you enable this policy setting, the file format compatibility dialog is not displayed whenever you save as an OpenDocument Spreadsheet file in Excel. If you disable or do not configure this policy setting, the file format compatibility dialog is displayed when you save as an OpenDocument Spreadsheet file in Excel.
400b5f7a1ab2 L_TurnOffFileFormatCompatiblityDialogForODS Registry
Copy registry mappings
HKCU\software\policies\microsoft\office\16.0\excel\options\disablesaveaslosswarningopendocumentspreadsheet (enabled) = 1
HKCU\software\policies\microsoft\office\16.0\excel\options\disablesaveaslosswarningopendocumentspreadsheet (disabled) = 0 Policy notes
This policy setting allows you to configure the file format compatibility dialog box when saving a file as an OpenDocument Spreadsheet file in Microsoft Excel. If you enable this policy setting, the file format compatibility dialog is not displayed whenever you save as an OpenDocument Spreadsheet file in Excel. If you disable or do not configure this policy setting, the file format compatibility dialog is displayed when you save as an OpenDocument Spreadsheet file in Excel.