Outlook Express - The message could not be sent (0x800c0131)

October 2016


When you open up Outlook Express you get the following error message:

An unknown error has occurred. Protocol: SMTP, Port: 0, Secure SSL: No, Error 0x800c0131Ce problem may be due to corruption or lack of Folders.dbx file. 


  • To solve this, simply restore the file Folders.dbx.
  • Search for Folders.dbx using the search tool(Start/Find/Files or Folders).
  • Rename the file to make a backup, for example Folders.bak.
  • Launch Outlook Express. Folders.dbx file is automatically recreated and the application opens correctly.

Related :

This document entitled « Outlook Express - The message could not be sent (0x800c0131) » from CCM (ccm.net) is made available under the Creative Commons license. You can copy, modify copies of this page, under the conditions stipulated by the license, as this note appears clearly.