cannot copy Outlook:data error (cyclic redundancy check)

Outlook Must be closed inorder to copy the file...If that isn't the case, how large is the pst file?

 

First lets see if the problem is because of a bad sector on your hard drive.

Go to Start > Run, type cmd and press OK

Now comes the tricky part: you have to Change Directory to where your .pst file is located. (for example cd \Documents and Settings\{user name}\Application Data\Microsoft\Outlook\).

When you have changed to the directory where your .pst file is located, type the following command: copy Outlook.pst NUL.

This reads the entire file by copying it to NULL, or "nowhere ". If this succeeds the problem is not actually with the file itself, but the location you were trying to copy it to.

If this copy fails, we've confirmed that a bad sector on your hard disk is actually being used by some portion of your .pst file.