Hi @Piero ,
Glad to hear this issue has been resolved!
Thanks for the sharing.
However, due to a recent update in forum policy, the question author now is not able to accept their own answers.
So I have written a brief summary of the solution this issue. Please feel free to accept it as the answer, which would benefit others who also has similar issues in forum.
Issue:
Error 0x800CCC92 Microsoft® Outlook® 2019 MSO (Version 2409 Build 16.0.18025.20030) 64-bit
Solution:
OP solved it by uninstalling the version included in Office 2019 and installing the new version of Microsoft Outlook