Windows – How to get drivers Wan Miniport “windows 8”

drivershardware-failurewindows 8

My computer has been working fine. I have not reinstalled or altered windows.

I have an error on my Wan Miniport.

There is a problem with the driver for WAN miniport (Network Monitor) #2. Reinstalling the driver might fix the problem.

//and this message

This device is not working properly because Windows cannot load the
drivers required for this device. (Code 31)

The trouble shooter doesn't work, it just says it's not fixed.

Wan Miniport (Network Monitor) #2 has driver problem Not fixed

I cannot uninstall this through the device manager. I click ok on uninstall and it does nothing.

I have searched the internet and cannot find an answer, without going into the registry. This I am reluctant to do, unless it is upon advice of a trustworthy source.

There is also an option to Add Legacy Hardware, but I do not have enough knowledge to venture into this, without advice.

I use Avast, and have a 64 bit operating system. I mention this, as it has been aggressive with removing executable files and blocking things.

The hardware ID is ms_ndiswanbh.

This question has been closed and marked as a duplicate:

How to find vendor and model of unknown drivers

This question asks about installing windows on a new machine. There are no drivers present. In my question, I have drivers, but the troubleshooter suggests reinstalling them, and I have not been able to figure out how to do this.

I reinstalled windows on a new machine and the drivers are not present
for the product network card. When in device manager all I get is the
question mark and am unable to figure out the actual name of the
vendor/model of the card making my search to find the correct drivers
hard. Anyone know how I can find out more about the hardware that does
not have drivers?

The answer to this question does not solve my problem.

Best Answer

There is a detailed explanation on a fix in the article Broken WAN Miniports. I suggest very carefully reading that article, for below I only give a short summary.

Uninstall the non-working miniport

  1. In Device Manager, right-click on the non-working miniport, choose Update Driver.
  2. Choose Browse my computer.
  3. In the next window, choose Let me pick driver from a list.
  4. Uncheck Show compatible hardware. From the Manufacturer list, choose Microsoft, and from the Network Adapter list, choose MAC Bridge Miniport. (It can be any device the user is allowed to uninstall.)
  5. Back in the device manager, delete the device that just turned into a MAC Bridge Miniport.
  6. Reboot.

Reinstall the miniports

  1. Get devcon.exe. Remember that a 32-bit version won't work on 64-bit systems. Getting the 64-bit version is described here.
  2. Go to command prompt run as administrator and go to the directory where you extracted devcon.exe

  3. The above article describes how to install many types of miniports, but I believe that you only need to install the Network Monitor:

    devcon.exe install c:\Windows\inf\netrasa.inf MS_NdisWanBh

    If running the command reports "driver install" failure, don’t pay it attention.

  4. Reboot.

Safety notes

Before starting these manipulations, take backups of all your data. Then create a system restore point, so in case of a problem you could rollback Windows to its actual state.

Ensure also that the .inf file C:\Windows\inf\netrasa.inf does in fact exist.

If this doesn't work for some reason, an alternative approach is described in the article Re-installing WAN miniport devices, that does however require registry work.

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