[Informational] Windows Vista and Server 2008 Unable to Receive IP Addresses

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notipa
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Joined: Wed Jun 24, 2015 11:18 pm

[Informational] Windows Vista and Server 2008 Unable to Receive IP Addresses

Post by notipa » Tue Dec 01, 2015 6:30 pm

On my laptop running Windows Server 2008, I found I was unable to receive an IP address on some wireless networks. After a bit of research, I found this Microsoft KB article detailing an issue with DHCP discovery. For conciseness, a short summary:
Under the following registry location, find the name of the affected network card (under <some number>\Description).

Code: Select all

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\NetworkCards
Once you find the card, remember the first couple of digits of its GUID, which is in the ServiceName value. Now go to this location:

Code: Select all

HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces
and locate the GUID you recorded in the last step. Under that service, create a new DWORD value named DhcpConnEnableBcastFlagToggle, and set its value to 1. Disable and re-enable the network interface, or renew your IP address, and it should get an IP address.

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