NTBackup.exe from WinNT 3.51 SP5 Causes Verify Errors

ID: Q161201

The information in this article applies to:

Microsoft Windows NT Workstation versions 3.51, 4.0
Microsoft Windows NT Server versions 3.51, 4.0

SYMPTOMS

After installing Service Pack 5 on Windows NT 3.51, you may start to see verify errors in NTBackup. The errors you see, in either your NTbackup screen or Backup.log, will have the following format:

*File information found on tape:
*%FileName% %Size% %Date% %Time%
*File information found on disk:
*%FileName% %Size% %Date% %Time%
*Difference encountered in alternate file data.
*The file %FileName% is different.

The problem seems to occur more frequently on Macintosh or large NTFS volumes.

CAUSE

This is caused by NTBackup checking the stream size of the data which may change every time you run backup.

RESOLUTION

This problem seems to be more of a nuisance than actual file problems, but can cause NTBackup to degrade in performance, especially on large volumes. So far, we have not seen any cases which actually showed file corruption. You can simply choose not to verify after backup or apply the Hotfix available as mentioned below.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 4.0. This problem has been corrected in the latest U.S. Service Pack for Windows NT version 4.0. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words: prodnt Mac volumes verify macfile sfm

Keywords : kbtool kbbug4.00 kbbug3.51 kbfix4.00.sp2 ntbackup NTSrvWkst
Version : 3.51 4.0
Platform : winnt
Issue type :