The Microsoft Outlook Office integration for Outlook can display the error:
‘Email failed to send. Error MAPI: Attachment not found Errorcode =’
MAPI errors are caused by Outlook incorrectly installed or missing/corrupted files. MS Office comes with repair tools which may fix this error. See Microsoft documentation for further details.
If a repair is unsuccessful, a full uninstall and reinstall may be required.
Workarounds for this issue are to drag and drop the email directly from Outlook into Volume or virtual print the email using the Volume printers.