Microsoft KB Archive/253910

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Updated Version of Ntbackup.exe Fixes Several Problems Interacting with Microsoft Exchange

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The information in this article applies to:


 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Professional
 * Microsoft Windows 2000 Server
 * Microsoft Exchange Server, version 5.5

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SYMPTOMS
An updated version of Windows 2000 Backup (Ntbackup.exe) is available to fix the following problems:

  You are unable to restore an Exchange database if the database you are attempting to restore is currently mounted on the Exchange server. Also, additional databases you may have selected for restoration are not restored, and you may receive the following error message:

Completed with skipped files.

NOTE: An unsuccessful restoration can damage an Exchange database by registering a successful restoration when it has not been successful.  When you perform an unattended restoration of multiple Exchange store groups from a single backup set, the files are restored successfully. However, you may experience the following behavior:

  When you use the Exeback2.exe tool to restore the files to the location where the log files are to be replayed, you may receive the following error message:

Error returned from a callback function call (0x77DB2FD8)

  You may receive the following warning message when you use the Exe98.exe tool:

The existing log file edb*.log doesn't match the log files from the backup set.

 The exeutil /mh command reports that the databases are inconsistent.   After you cancel a restoration, the restore environment is held open. If you then attempt to perform another restoration, your computer may log the following error message in the event log:

Event Type: Error

Event Source: NTBackup

Event Category: None

Event ID: 8012

Description: The 'Microsoft Information Store' returned 'The restore environment is used by an other process from a call to 'HrESERestoreOpen' additional data 'EON'

 You are unable to open the Metabase after restoring a System State backup.</li> If you cancel a restore procedure, Ntbackup.exe locks the file that restore was cancelled on until you quit Ntbackup.exe.</li> When you select an entire storage group to be restored, and then you deselect one of the stores, the restore environment is closed by Ntbackup.exe when it encounters the deselected storage group, and no other databases are restored.</li> Ntbackup.exe does not increment the file count for files being backed up and restored, listing 0 files as being either backed up or restored for an Exchange database.</li> When you select a single database to be backed up, you receive a dialog box that is usually displayed when two databases are selected across two servers.</li> Ntbackup.exe stops responding (hangs) when you attempt to restore an Exchange database using the Backup Wizard.</li> After you back up an unmounted database, and then view the restore user interface, the database listed above the unmounted database you backed up is incorrectly displayed as invalid.</li> When a database in a backup set is marked invalid, Ntbackup.exe still attempts to restore it, possibly causing data loss.</li> If the backup logs are invalid, a restore operation does not work, however, current databases are overwritten with older versions, possibly causing data loss.</li> Ntbackup.exe may intermittently generate an access violation error message because a list of file names passed into HrESERestoreAddDatabase is not properly null terminated.</li></ul>

RESOLUTION
A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

The English version of this fix should have the following file attributes or later:

<pre class="FIXEDTEXT">  Date        Time    Version        Size      File name     Platform ---  02/11/2000  09:47p  5.0.2195.1117  1,160,976 Ntbackup.exe  x86 NOTE: To view the version, right-click the Ntbackup.exe file in Windows Explorer, click Properties, and then click the Version tab.

STATUS
Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.

Additional query words:

Keywords : kberrmsg kbtool kbui Win2000PreSP1Fix

Version : WINDOWS:2000; winnt:5.5

Platform : WINDOWS winnt

Issue type : kbprb

Technology :