Realtek 8191SE wireless card IP stack binding error on Windows 7 x64 - March 2010
When you run a diagnostic on the wireless adapter you get the following error message:
"Windows couldn't automatically bind the IP protocol stack to the network adapter"
This can be caused by the fact that Windows has not yet installed and configured the 'Microsoft Virtual WiFi MiniPort Adapter' - a virtual software adapter it needs.
Go to Control Panel -> Network and Sharing Centre and click on Change Adapter Settings.
Apart from your wired connection, how many icons for wireless connections can you see?
Can you see just one icon (called 'Wireless Network Connection' or similar) for the Realtek wireless card, or can you see two, the second one called 'Wireless Network Connection 2', which is for the Microsoft Virtual WiFi Miniport Adapter?
If you do not have an entry for the Virtual WiFi MiniPort Adapter you need to
persuade your machine to install and configure this component.
To do that right-click on the icon for the Realtek card and go to Properties.
Untick the entry for 'Internet Protocol Version 6 (TCP/IPv6)' and click OK.
(If you are already using TCPv6, don't worry, you can restore it later.)
Wait a minute and you should see a new icon has been created for the MiniPort Adapter.
If this doesn't work try unticking another box - for me it worked just unticking TCPv6, but for example I also have 'Virtual PC Network Filter
Driver' and 'Kaspersky Anti-Virus NDIS 6 Filter' in my list - you will have to experiment, but don't worry, once Windows realises it needs the MiniPort Adapter and creates it you can then re-instate your settings.
The point of unticking one or more items in your list is to force Windows to reconfigure the settings for the Realtek wireless card - it should then realise it needs the MiniPort Adapter, if this was not previously configured.
OK, so now you should have two wireless icons - one for the card and one for the MiniPort Adaper.
Try running a diagnostic on the card now - right-click on the icon and select 'Diagnose'.
It should be OK now - although interestingly if you run a diagnostic on the MiniPort Adapter that returns the same error message you were previously getting for your card (MS: ??). That really doesn't matter though, because it is only a virtual software device, and just passes signals through.
You should now also be able to see any available wireless networks by clicking on the network icon in the taskbar.
Now the MiniPort Adapter has been created and configured you should be able to re-instate any
items you unticked in your wireless card's Properties list - I suggest you test them one at a time.
Also remember if NOT using DHCP you may need to check your IP settings to get full wireless Internet access. This will require you to set the Default Gateway. If your wireless Default Gateway is the same as your LAN's (usually) you will get a warning message about 'duplicate Default Gateway on network' - just click Yes to get Internet access.
I have seen this error message on many forums and hope this helps.
My sincere thanks to Paul and his colleagues at pcspecialist.co.uk - what a fantastic machine!