Outlook Express: 0x800c0133

So today I found out that this error is received when a DBX file
(probably Inbox) is corrupted or has reached the limit of 2GB.
Although OE is simple and does the job the problem is that once
messages are deleted the size of the DBX file(s) stays the same
resulting in these errors.

To resolve this error there are two options:

1. This one if for the basic user and easier to talk a person through
on the phone.
Information was found here: http://www.insideoe.com/files/maintain.htm#compact
- Create a new folder and move all emails to this folder
- Click on File and choose Work Offline
- Click on File, go to Folders and choose Compact All folders
# This step does take time as it goes through all folders including
the newly created one with all the emails
# If an error occurs, such as "cannot compact, folder in use", just
close OE, wait a second or two, then re-open OE and begin the process
again.

Working with Windows and supporting users you do learn new thing
everyday, never knew you could compact from the File menu! :)

Always did it the longer way as outlined in point two:

2. This is the more advanced way, I personally prefer this!!!
- Right click on Local Folders and choose Properties
- In the box that pops up, you will see information on the Store
Folder. You can click on the text, hit the Home button on the
keyboard, hold Shift and hit End on the keyboard
- Right click on the highlighted text and choose Copy
- Close OE
- Click on Start and go to Run
- Clear all text from this box and right and choose Paste
- Remove Inbox.DBX from the pasted text, put quotation marks at the
beginning and at the end of the text
- Hit the Run/OK button
- The window will pop up showing you all the files used in OE, the
name of the file is relevant to the name of the folder in OE
- Change the layout to Details and sort by size
- Look for any files that are close to or larger than 2GBs
- These file(s) could be the problem. Make a note of these files,
leave this window open and open OE
- In OE create a new folder or folders and move all messages from the
folder(s) that are bigger than 1.5GB to the new folders relevant to
the old ones
- Once the move is done, close OE
- Go to the OE store location, locate the old DBX file and rename them
- OE will not locate the old files and will automatically create new
ones