To correct a MAPI related error: restart the MAPI e-mail program (for example,Outlook) or save and close the document, and ...

To correct a MAPI related error: restart the MAPI e-mail program (for example,Outlook) or save and close the document, and then restart Word after restarting your MAPI e-mail application. Word will establish a new MAPI session, allowing the document to be sent.