Directory service does not start, event log shows error -510

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

EventID: 1166
Source: MSExchangeDS
Type: Information
Error -1811 has occurred (internal ID 2030148). Contact Microsoft Technical Support for assistance.

EventID: 1002
Source: MSExchangeDS
Type: Information
The Microsoft Exchange Server database (EDB) could not be initialized and returned error -1811. Unrecoverable error, the directory can't continue.

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

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.