0x800C0131 - An Unknown error has occurred. Protocol: SMTP Port: 0 Secure: No [SSL]

Cause:
This behavior can occur if the Folders.dbx file is missing, damaged, or using the read-only attribute.

Resolution:
Note: Email may be lost during this procedure. It is important that you save any important email

1.	Click Start, point to Find, and then click Files or Folders.
2.	In the Named box, type folders.dbx.
3.	In the Look In box, click your primary hard disk (usually drive C), and then click Find Now.
4.	Right-click the Folders.dbx file, and then click Rename.
5.	Type folders.old, and then click OK.
6.	Start Outlook Express. This creates a new Folders.dbx file automatically