The error number 0x800C0133 in Outlook Express appears that your mail is exceeding the maximum size.
To be more precise we need to understand the operation of Outlook Express: the program for each folder in your mail create a .dbx file
This file must not exceed the size of 2GB.
And here also came to the solution of the problem, to solve this error you can proceed in several ways:

1. Delete some mail from the folder to reduce its size
2. Create multiple folders to move there different email so as not to exceed the proportion above
3. Use another application to manage e-mail because of the scale probably make a professional use.

In the case of point 1 and 2 this is the default location where you can see the file size. Dbx:
C: \ Documents and Settings \ [User Profile] \ Local Settings \ Application Data \ Identities \ {code}\ Microsoft \ Outlook Express
Also after you have deleted or moved the mail run the "Compact" request at the close program.