DOCUMENT:Q178999 22-MAR-1999 [exchange] TITLE :XADM: Online Backup Fails with -1811 Errors PRODUCT :Microsoft Exchange PROD/VER:WINDOWS:4.0,5.0 OPER/SYS: KEYWORDS:kbusage ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, versions 4.0, 5.0 ------------------------------------------------------------------------------- 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 : kbusage Technology : kbExchangeSearch kbExchange500 kbExchange400 kbZNotKeyword2 Version : WINDOWS:4.0,5.0 Issue type : kbprb ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.