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Microsoft KB Archive/103896

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MSBACKUP Err Msg: DEFAULT.CAT Does Not Match PSS ID Number: Q103896 Article last modified on 09-07-1993 PSS database name: O_MSDOS



The information in this article applies to:
- Microsoft MS-DOS operating system version 6.0


When you compare a set of files backed up using either Microsoft Backup for MS-DOS (MSBACKUP.EXE) or Microsoft Backup for Windows (MWBACKUP.EXE), you may receive a message stating that the file DEFAULT.CAT has changed since the backup was made. This message appears every time the DEFAULT.CAT file from a backup set is compared.

If the backup was made using MSBACKUP.EXE, the following error message appears when you do a compare on the file DEFAULT.CAT:

DEFAULT.CAT does not match.

If the backup was made using MWBACKUP.EXE, the following error message appears:

The file “” has a different time from the file in the backup set. They will not be compared.


These error messages occur because DEFAULT.CAT is used by the backup programs (MSBACKUP.EXE and MWBACKUP.EXE) during the backup process and is immediately rewritten when the backup is complete. Therefore, the file always appears to have changed when a compare is made later.

Additional reference words: 6.00

Copyright Microsoft Corporation 1993.