Excel for Mac - Run-time error '1004': Method 'Name' of object 'Addin' failed

Dears,

Whenever I open any Excel File (existing or blank), I get the following error message:

"Visual Basic for Applications

Run-time error '1004':
Method 'Name' of object 'Addin' failed"

Note: I don't have any VBA code in the file - again, this message also appears when opening a blank/new/empty file.

I thought it could be related to one of the Add-ins that I had installed, but even after removing all of them, the message still appears.

Does anybody know what it means and how to fix it?

I'm running Excel for Mac Version 16.91 (24111020) from Microsoft 365 in macOS Sequoia Version 15.1.1.

Thanks in advance,

Andre