There is also another solution, which does not bypass Gatekeeper forcing macOS Catalina to open LibreOffice as the solution just described (which is perfectly safe, in any case).

Are you sure you want to open it?, and will eventually provide the Open option to launch LibreOffice. The system will show a less scary message: macOS cannot verify the developer of LibreOffice.app. To solve the issue and bypass the block, the user has to right-click with the mouse (or press Control on the keyboard while clicking with the mouse) on the LibreOffice icon and select Open. Of course, this represents a problem for all Mac users who rely on LibreOffice for their office documents after they have upgraded to macOS Catalina. Although we have duly followed the instructions, when users launch LibreOffice 6.3.x – which has been notarized by Apple – the system shows the following scary message: LibreOffice.app cannot be opened because the developer cannot be verified, and provides only two options: Move to Bin (delete) and Cancel (revert the operation, i.e. Mac apps, installer packages and kernel extensions that are signed with a Developer ID must be notarized by Apple to run on macOS Catalina. MS Office 2013/2016 do not write out the Strict format by default (it has to be selected).Apple has released macOS 10.15 Catalina on October 7, 2019. This issue is slated to be addressed in the next revision to ISO/IEC 29500. MS Office 2007 was supposed to be able to read this format (which was to be the same as ECMA-376 1st Edition), but Microsoft broke this. A lengthier analysis by the European Commission can be found here. The answer here indicates how LO handles these various formats.

None of these versions are compatible with each other (i.e., are equivalent).

ISO/IEC 29500 Strict / ECMA-376 2nd Edition (read only by MS Office 2010 read / write by MS Office 2013/2016).

ISO/IEC 29500 Transitional (read / write by MS Office 2010/2013/2016 and Mac Office 2011).

ECMA-376 1st Edition (read / write by MS Office 2007 read only by MS Office 2010/2013).It is also important to more clearly indicate which version of OOXML the statement “.xlsx and. Only Microsoft “fully” supports these formats. Does LibreOffice fully support Microsoft.

Libreoffice calc mac