Event ID 1015 — DHCP Database Integrity

Updated: January 8, 2009

Applies To: Windows Server 2008 R2


Database integrity refers to the ability of the Dynamic Host Configuration Protocol (DHCP) database to function properly, maintaining an uncorrupted state.

Event Details

Product: Windows Operating System
ID: 1015
Source: Microsoft-Windows-DHCP-Server
Version: 6.1
Message: The JET Database call returned the following warning : %1. Additional Debug Information: %2.


Repair database and restore from a known good backup

If the DHCP server database becomes corrupted or is lost, recovery is possible by replacing the server database file (Dhcp.mdb), located in the %SystemRoot%\System32\Dhcp folder, with a backup copy of the same file.

If DHCP Manager was used previously to perform a backup, you can obtain the backup copy of the server database file located in the %SystemRoot%\System32\Dhcp\Backup folder. You can also restore the Dhcp.mdb file from a tape backup or other backup media.

To perform these procedures, you must be a member of the Administrators group, or you must have been delegated the appropriate authority.

To restore a backup copy of the DHCP database:

  1. Click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as Administrator.
  2. Type net stop dhcpserver, and then press ENTER.
  3. Type md c:\olddhcp, and then press ENTER.
  4. Type move %SystemRoot%\system32\DHCP\*.* c:\olddhcp, and then press ENTER.
  5. Type del %SystemRoot%\system32\DHCP\Dhcp.md, and then press ENTER.
  6. Type copy%SystemRoot%\system32\dhcp\backup\jet\new\dhcp.mdb%SystemRoot%\system32\dhcp\dhcp.mdb, and then press ENTER.
  7. Type net start dhcpserver, and then press ENTER.


Confirm that the server starts successfully and without errors.

Related Management Information

DHCP Database Integrity

DHCP Infrastructure

Community Additions