Some of the Microsoft Outlook users are complaining that they are facing the ‘Outlook Operation Failed Attachment’ error. They face this error while trying to launch the attachments in send email or text. The complete errors displays: The operation failed. An object cannot be found. In this situation, users cannot launch attachments or send messages with Outlook. If you are one of them, then follow the steps mentioned below to fix this issue.

Source:- Fix Outlook Operation Failed Attachment Error