I met this error today that states my NDISWANIP can not be accessed. The situation was weird that my network interface cards were actually brought up. But when I use IPCONFIG to view them, nothing was shown. I checked the event log and found event 4191.
I tried the solution provided by MS knowledge base but the problem persists. Then I cross compared the registry of a working computer with my non-functional one. I found a registry directory is missing on my non-functional computer, which I guess it went broken due to the enable/disable/setting of Virtual Box.
I was just about to give up but I found a way to solve it: uninstall the network devices and refresh the hardware manager. It starts to reinstall the driver and it is back to normal. I created the missing registry before I uninstall the drivers. I am not sure whether this will cause a difference, but I am happy for now and do not have plan to try it.
| Product: | Windows Operating System |
| Event ID: | 4191 |
| Source: | Tcpip |
| Version: | 5.0 |
| Component: | System Event Log |
| Symbolic Name: | EVENT_TCPIP_ADAPTER_REG_FAILURE |
| Message: | IP could not open the registry key for adapter %2. Interfaces on this adapter will not be initialized. |
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