What to do if “Ndu.sys” causes a BSOD in Windows 10


What to do if “Ndu.sys” causes a BSOD in Windows 10

“Ndu.sys” is the system driver that controls network data. An error in its operation is accompanied by the traditional blue screen and indicates that the network driver is damaged or incompatible with the hardware used.

Method 1: Update the network card driver

Updating or reinstalling your network adapter drivers may help resolve the "Ndu.sys" error. You can find the current version of the hardware software on the manufacturer's official website. Tools built into Windows 10 and special utilities from the network card manufacturer or third-party developers can also help. All ways to download and install the hardware driver are described in more detail in our separate article.

Read More: Installing Network Adapter Software in Windows 10

In some situations, rolling back the driver version to a previous state helps if there is a critical bug in the software. Failures are also caused by incorrect installation:

  1. Run an internal tool "Device administrator". Windows 10 by right-clicking on the system icon in the lower work pane and selecting the appropriate item.
  2. Expand the menu "Network adapters" and go to "Properties". of the selected team by clicking the right mouse button on it.
  3. In a new window on the tab "Driver". push the button "Back".if it is active.
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If the driver rollback button is grayed out and not active, there is no way to restore the hardware state. In this case, only reinstallation or update can help.

Method 2: Rename the “Ndu.sys” file

Another one of the easiest methods to fix the error is to rename the system file in the driver directory on the local drive. This is suitable if the problem occurred after reinstalling the system and the old data was saved in a special folder "Windows.old". You will need to log in as an administrator to complete the procedure:

Also Read: Account Management Techniques in Windows 10

  1. through the embedding "Explorer" navigate the road «Локальный диск (C:) – Windows – System32 – drivers». In the last folder, locate the file “ndu.sys”. Right-click and select "Rename"..
  2. Give the file whatever name you want. To avoid confusion, you can add a number or a symbol at the end, for example “ndu1.sys”.

Since the file is a system file, deleting or modifying its settings is not recommended and therefore these actions are not allowed. But there is a way to access a file through its properties:

  1. Right-click on the system file name and from the context menu select "Properties"..
  2. On the tab. "Security" push the button "More".
  3. Do click in the link "Change". On the line "Owner"..
  4. In the new window, select "Additional features"..
  5. Click on the "Look for".to display a list of accounts on the computer. Highlight the user you want to make the object owner and press the key "OK" BUTTON. in this window and in the previous one to confirm the action.
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If the local drive has an earlier version of the operating system from which the upgrade was made, the file “ndu.sys” must be copied from there. Go back to "Local drive (C :)" and look for the folder "Windows.old". It will also require you to navigate to the path described in Step 1 and then copy the file “ndu.sys”.highlighting it and simultaneously pressing the keys "Ctrl + C". Navigate back to the folder from Step 1 and paste the copied file using the shortcut keys "Ctrl + V" or the context menu.

Method 3: Change the way you connect to the Internet

If you are using a wired connection to the Internet through the Ethernet port, it may be helpful to change the way you access the network, i.e. connect to a wireless Wi-Fi hotspot and vice versa.

Try the computer with a new connection to see if the error goes away. If not, move on to the next methods. Also investigate if the new way of connecting to the network is not satisfactory.

Method 4: Built-in troubleshooter

The operating system has a built-in troubleshooter for various hardware and software components:

  1. Open the application «Settings»by selecting it from the Windows main menu.
  2. Ir a "Update and security".
  3. In the left panel, go to "Problem solving"and then click the link "Additional tools for troubleshooting".
  4. click on the line "Network adapter". A new button will appear – "Run the troubleshooter.". Use it.

The tool will then independently check your system and network hardware for errors. If any are found, they will be automatically corrected or the user will be offered options to correct the situation.

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Method 5: Update the version of the operating system

The blue screen and “Ndu.sys” error in Windows 10 can appear because the version of the operating system is out of date. To see if this is the case, try manually downloading and installing the updates. You can also use special support tools from Microsoft. For more instructions on how to update your operating system, see our separate article.

Read more: Update Windows 10 to the latest version

Method 6: Roll back to a previous system state

The Windows 10 operating system offers an option to go back to a previous state, that is, to use a restore point. This method helps in many situations, so you can remove “Ndu.sys” error with blue screen.

All recent apps and settings that were installed before the restore point was created will be removed.

Our author on the site has detailed how to roll back the system to a previous state in two ways: whether to boot or not to boot. In the first case, you can use the normal tool and "Control Panel".and in the second, the entrance to the "Safe Mode"..

Read more: Go back to a restore point in Windows 10

Method 7: Reinstall Windows 10

The most radical way is to completely reinstall the operating system, making Windows 10 “clean”. There are several methods to do this: you can reset all settings to factory defaults or install the system from removable media, such as a USB stick. All methods have been discussed above. Please note that all user data, settings and applications stored on the local drive where the system is being installed will be irretrievably erased, so be careful to make copies.

Read more: Ways to reinstall Windows 10 operating system

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