"Error while preparing to send sharing message" for Contacts in Microsoft 2019

Question

I have a user who regularly shares his contacts folder with new sales reps so they can have the contacts of our clients and until recently, he has been able to share this folder with no issue. Now when he clicks on 'Share Contacts' in his copy of Outlook. he just gets a pop-up saying, "Error while preparing to send sharing message." I have already uninstalled and reinstalled his copy of Outlook, tried the automated repairs and still the error persists. I have seen a lot of people reporting this error message when they share their calendar invites but nothing for sharing contacts. Can someone please help me with this?

Answer 1

Dear Joshua Nanney,

Good day!

Thank you for posting to Microsoft Community. We are happy to assist you.

Based on your post, we understand that you have a concern with sharing contacts in Outlook.

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We greatly appreciate you, for your time and efforts on troubleshooting this from your end. However, since you have already tried some client end solution and the issue persists, and as we are belong to Microsoft Community site, we have limited resource to examine your query further. Therefore, we sincerely recommend that you can contact our dedicated technical support team via Get support - Microsoft 365 admin | Microsoft Learn. As they have a privilege to check the issue from your end, hopefully they will assist you accurately and effectively.

Thanks in advance for your understanding! Your patience and cooperation will be highly appreciated.

Stay safe and healthy. Have a nice day!

Sincerely,

Libeamlak | Microsoft Community Moderator