DOCUMENT:Q301505  11-JUL-2001  [exchange]
TITLE   :XADM: Directory Service Doesn't Start, Event Log Error -510
PRODUCT :Microsoft Exchange
PROD/VER::5.5
OPER/SYS:
KEYWORDS:

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The information in this article applies to:

 - Microsoft Exchange 2000 Server 
 - Microsoft Exchange Server, version 5.5 
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SYMPTOMS
========

When you attempt to start the directory service, a pop-up window reports the
following error:

   Could not start the Microsoft Exchange Directory service on \\SERVERNAME
   Error 2140: An internal Windows NT error occurred.

The event log shows the following events:

Event ID: 109
Source: ESE97
Type: Information
MSExchangeDS (988) the database engine is replaying log file
R:\LogFiles\DSAData\edb.log.

Event ID: 110
Source: ESE97
Type: Information
MSExchangeDS (988) the database engine has successfully completed recovery
steps.

Event ID: 0
Source: ESE97
Type: Information
MSExchangeDS (988) -510

Event ID: 1166
Source: ESE97
Type: Information
Error -510 has occurred (internal ID 2030148). Contact Microsoft Technical
Support for assistance.

Event ID: 1002
Source: ESE97
Type: Information
The Microsoft Exchange Server database (EDB) could not be initialized and
returned error -510. Unrecoverable error, the directory can't continue.

CAUSE
=====

Error -510 corresponds to JET_errLogWriteFail. The error can be caused by a
corrupted Edb.log file.

WORKAROUND
==========

To work around this issue, follow these steps:

1. Backup your current database.

2. Check whether Dir.edb is consistent by using eseutil /mh.

3. Do one of the following:

    - If Dir.edb is consistent, remove all log files and start the directory
      service.

      -or-

    - If Dir.edb is inconsistent, restore from backup.

4. When you restore from Online Backup, replay only transaction logs older than
   the corrupted one.

5. When you restore from Offline Backup, empty the database and transaction log
   directories and restore only Dir.edb.

Additional query words: exch2kp2w

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Keywords          :  
Technology        : kbExchangeSearch kbExchange550 kbZNotKeyword2 kbExchange2000Search kbExchange2000Serv
Version           : :5.5
Issue type        : kbprb

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