Your upgraded server System event log contains:
Event Type: Error
Event Source: Service Control Manager
Event Category: None
Event ID: 7023
Description: The DHCP Client service terminated with the following error: Access is denied.
When you attempt to start the DHCP client service manually, you receive:
Could not start the DCHP Client service on Local Computer.
Error 5: Access is denied.
This behavior occurs because the Network Service account does not have sufficient permissions on the following keys:
To correct this problem, use the Corrected version of SubInAcl and type the following commands in a CMD.EXE window:
subinacl /keyreg HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\DHCP /grant="NT AUTHORITY\NetworkService"=F
subinacl /keyreg HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\TCPIP /grant="NT AUTHORITY\NetworkService"=F
NOTE: You can perform this remotely by pre-pending \\<ServerName>\ to each command.