Excel 2016 – General Mail Failure Error

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This post was originally published on June 18, 2018
The latest update to this post was made 4 years ago.

Excel 2016 - General Mail Failure ErrorExcel 2016 – General Mail Failure Error


With the 1709 Creator Update or later update for Windows 10 applied, Excel 2016 starts throwing a ‘General Mail Failure.  Quit Microsoft Excel, Restart The Mail System And Try Again’ error message.


  • Close Outlook and Excel
  • Delete (or rename) the file msmapi32.dll from C:\Program Files (x86)\Common Files\System\MSMAPI\xxxx where xxxx is a language code of your Office installation.  NOTE: U.S.A. is typically 1033.
  • Restart Outlook and Excel
  • You should now be able to send email like normal from Excel 2016.  The MSMAPI32.DLL will automatically re-appear in the folder above.

Tags: #excel #windows10 #techsupport #office

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