Event ID: 7023 DHCP Client service does not start

Symptoms:

The DHCP Client service does not start after you upgrade a Windows 2000 Server-based domain controller to Windows Server 2003

Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7023
Date: Date
Time: Time
User: N/A
Computer: ServerName
Description: The DHCP Client service terminated with the following error: Access is denied.

Cause:
This problem occurs because the Network Service account does not have sufficient permissions to access the following registry subkeys when you upgrade to Windows Server 2003:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dhcp

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip

Solution:

To resolve this problem, assign the Network Service account Full Control access to the following registry subkeys and subkeys under:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dhcp

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip

http://support.microsoft.com/kb/895149