Word couldn't send mail because of MAPI failu "Unspecified error"

then on the show help button it gave this suggestion

This error can occur if you attempt to send a Word document as an e-mail
attachment in Word and the MAPI session was closed and Word is no longer
able to connect to that MAPI session, or there is a problem with the fax
configuration.

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.

To correct a problem with the fax configuration, review the configuration
settings for your fax software and make the appropriate changes.

More information about this error message online.

Details
Product: Office
Event ID: 10092
Source: OfficeErrorMessages
Version: 11.0
Message: Links to additional information about the error message you
saw are available below.



Details
Product: Office
Event ID: 10092
Source: OfficeErrorMessages
Version: 11.0
Message: Links to additional information about the error message
you saw are available below.


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