Using older versions of Outlook for Mac in business environments
Hi Chawki,
Thanks for your post. I noticed that you post your query under Outlook for Mac 2016, so you are using Outlook for Mac 2016, right? For Outlook for Mac 2016, we are unable to rebuild the data base manually. Because it will rebuild the data base automatically if it is needed. That's why the Microsoft Database Utility doesn't launch.
For the exporting Outlook items issue, please refer to the following article to make sure that all the steps are all right.
If all the steps are right and the issue persists, please contact the dedicated support channel for Outlook for Mac for further assistance. You can just click Help> Contact supportto access the experts for Outlook for Mac. For your reference.
Best regards,
Coldwell