Word couldn't send mail because of MAPI failure: "Login failure".
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. It can also occur if 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.
Microsoft Office 2010
Vendor: Microsoft Corporation
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