Microsoft Outlook Express users often encounter with an unknown error: 0x800C0133 .
This error signifies that you just got your Inbox corrupted.Follow these simple steps to recover your mailbox files:
Navigate to Start->Programs->Outlook Express
Browse Tools=>Options=>Maintenance=>Store Folder and then choose remember inbox.
Exit the application
Generally Inbox.dbx file stays hidden so you need to make it visible Go to control panel => folder options=>View=>Show hidden files, folders Select the option=>apply the changes and then locate inbox.dbx file.
Simply cut and paste the folder contents,or you can move the Temp folder to Inbox folder
Outlook Express Data Recovery one of the best software to resolve any type corruption issues without required Outlook Express environment just requred .dbx files.