Microsoft KB Archive/178999

= XADM: Online Backup Fails with -1811 Errors =

Article ID: 178999

Article Last Modified on 10/28/2006

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APPLIES TO


 * Microsoft Exchange Server 4.0 Standard Edition
 * Microsoft Exchange Server 5.0 Standard Edition

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This article was previously published under Q178999



SYMPTOMS
Online backup may fail with a -1811 error. More specifically, either the directory or the information store cannot be backed up.



CAUSE
A backup has failed previously for an unknown reason, and now a patch file is resident in either the dsadata directory or mdbdata directory.



WORKAROUND
To work around this problem, do the following:


 * 1) Stop the Exchange Services.
 * 2) Back up the Exchange Server data.
 * 3) Remove all files from the dsadata directory or mdbdata directory on all drives, except for the database file.
 * 4) Restart the Exchange Services.
 * 5) Attempt an online backup.



MORE INFORMATION
You may also see these events:

  ID: 15 Source: EDB Description: MSExchangeIS, 329, the database engine has stopped the backup with error -1811.

Keywords: kbprb kbusage KB178999

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