Netwtw06.sys crashes when shutting down on Windows 11

[saita]

On Windows 11, Netwtw06.sys always crashes with DRIVER_UNLOADED_WITHOUT_CANCELLING_PENDING_OPERATIONS when shutting down.

Crash dump shows that Netwtw06.sys is unloaded without cancelling timers, DPCs, worker threads, etc.

This issue can occur immediately after installing Windows 11.

Environment

• OS: Windows 11
• Driver: Netwtw06.sys (20.70.3.3 and 20.70.27.1)
• NIC: Intel (R) Dual Band Wireless-AC 8265

Steps to Reproduce

1. Install Windows 11.
2. Modify registry.
   1. Run regedit.exe
   2. Select HKEY_LOCAL_MACHINE\SYSTEM\HardwareConfig\{Current} key on left pane.
   3. Double click BootDriverFlags value, and set least significant bit to 1
      (ex: 0x1c => 0x1d , 0x0 => 0x1)
   4. Close regedit.exe
3. Reboot Windows to apply the registry.
4. Reboot again. When shutting down, Windows crashes with DRIVER_UNLOADED_WITHOUT_CANCELLING_PENDING_OPERATIONS.

Detail

• When I unset LSB of BootDriverFlags value on registry, this issue doesn't occur.
• Even if I update Netwtw06.sys to the latest version (20.70.27.1), this issue occurs.
• I have attached the result of !analyze -v on WinDbg as win11-bsod.txt.

[JosueO_Intel]

Hello saita,

Thank you for posting on the Intel communities. In order to have a better understanding of the issue, please share with us the following information: 

1. Is this a desktop or a laptop?
2. Is this the original wireless adapter of the system?

Also, please download and install the Intel System Support Utility (Intel SSU):

https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility-for-Windows- 

Open the application and select "Everything" click on "Scan" to see the system and device information. By default, Intel SSU will take you to the "Summary View". Click on the menu where it says "Summary" to change to "Detailed View".  

Click on "Next", save the report and attach it to your response.

Regards, 

Josue O.  

Intel Customer Support Technician

[saita]

Hello Josue,

Thank you for your quick reply.

> 1. Is this a desktop or a laptop?

laptop 

> 2. Is this the original wireless adapter of the system?

Yes. The laptop PC (ThinkPad L380) originally had wireless adapter (Intel (R) Dual Band Wireless-AC 8265)

> Click on "Next", save the report and attach it to your response.

I attached to this reply.

[JosueO_Intel]

Hello saita,

We recommend performing a clean install of the latest wireless drivers provided by the system manufacturer since these drivers are customized. Follow these steps:

Check Windows* updates:

• Click the Windows Start button. 

• Click the search and type Windows updates and click on that option.

• Select Check for Updates and ensure you have the latest Windows* version. 

Clean installation of the Wireless Driver:

1- Download the latest customized driver from the Computer Manufacturer Support Websites and save the installer on the computer.

1. Disconnect from the internet to make sure the driver will not be automatically updated by Windows.

3- Uninstall the Intel Wireless driver. To do this, please follow the steps on the link below under these sections:

• Uninstalling the Wi-Fi/Bluetooth® Driver for Your Intel® Wireless Adapter

https://www.intel.com/content/www/us/en/support/articles/000005756.html

4- Restart the computer.

5- Right-click the Windows Start button. Select Device Manager.

6- Repeat steps 3 through 5 until the option to Delete the driver software for this device is greyed out.

7- Install the latest wireless driver provided by the system manufacturer.

8- Once the latest driver has been installed, enable the internet connection again.

If the issue persists, repeat the Clean installation process using the latest Intel® generic wireless driver available at Download Center.

https://www.intel.com/content/www/us/en/download/19351/windows-10-and-windows-11-wi-fi-drivers-for-intel-wireless-adapters.html

Regards, 

Josue O.  

Intel Customer Support Technician

[saita]

Hello Josue,

We recommend performing a clean install of the latest wireless drivers provided by the system manufacturer since these drivers are customized.

The issue still occurs even though we performed a clean install of Windows 11 and the latest driver (provided by the system manufacturer).

• PC: HP ProBook 430 G5 Notebook PC
• Driver: Netwtw06.sys 20.70.25.2 / downloaded from https://support.hp.com/jp-ja/drivers/selfservice/swdetails/hp-probook-430-g5-notebook-pc/17047126/swItemId/ob-276700-1
• SSU: ssu_hp.txt

If the issue persists, repeat the Clean installation process using the latest Intel® generic wireless driver available at Download Center.

Nothing changes. The issue still occurs.

• PC: HP ProBook 430 G5 Notebook PC
• Driver: Netwtw06.sys 20.70.27.1 / downloaded from https://www.intel.com/content/www/us/en/download/19351/windows-10-and-windows-11-wi-fi-drivers-for-intel-wireless-adapters.html
• SSU: ssu_intel.txt

[AlHill]

@saita Why does your second link say intel, but is actually HP?

Please correct.

Doc (not an Intel employee or contractor)
[Waiting for Windows 12]

[saita]

@AlHill Sorry. I corrected it now.

[JosueO_Intel]

Hello saita,

Thank you for the information provided, we noticed that you mentioned that in order to reproduce the issue we need to modify the key registry of the OS. It is worth mentioning that modifying these settings could cause damage to the OS and make the system don’t work as expected. 

Please let us know if, on default settings, the issue persists. 

Also, please confirm if the issue is with the Lenovo system or with HP systems. 

Regards, 

Josue O.  

Intel Customer Support Technician

[saita]

Hello Josue,

Thank you for the information provided, we noticed that you mentioned that in order to reproduce the issue we need to modify the key registry of the OS. It is worth mentioning that modifying these settings could cause damage to the OS and make the system don’t work as expected. 

Please let us know if, on default settings, the issue persists. 

It seems that the registry key is modified by Windows when we boot Windows from iSCSI.

So, this report can be expressed as follows:

On Windows 11, Netwtw06.sys always crashes with DRIVER_UNLOADED_WITHOUT_CANCELLING_PENDING_OPERATIONS when shutting down if we boot Windows from iSCSI.

Also, please confirm if the issue is with the Lenovo system or with HP systems. 

This issue occurs with "Lenovo L380" and "HP ProBook 430 G5 Notebook PC".

[JosueO_Intel]

Hello saita,

Thank you for the information provided.  

I will proceed to check the issue internally and post back soon with more details. 

Regards, 

Josue O.  

Intel Customer Support Technician

[JosueO_Intel]

Hello saita,

Hope you are doing great and staying safe, in this case, due to the nature of the issue which is modifying the registry or registry being modified by the OS, our recommendation is to check directly with Microsoft to get specialized support with the OS issues you are having. 

Hope this information is useful, if you need any additional information, please submit a new question as this thread will no longer be monitored.  

Regards, 

Josue O.  

Intel Customer Support Technician

[saita]

Hope you are doing great and staying safe, in this case, due to the nature of the issue which is modifying the registry or registry being modified by the OS, our recommendation is to check directly with Microsoft to get specialized support with the OS issues you are having. 

Hello @JosueO_Intel,

I have already contacted to Microsoft support team and got the following answers:

• They checked the result of `!analyze -v` and said that the BSOD occurred because Netwtw06.sys didn't cancel the pending operations (on lookaside list, DPC, worker thread, etc.) before it was unloaded.
• They said that the registry key is modified by Windows when we boot Windows from iSCSI, and any drivers should work fine even if this registry is set.
• They don't have any internal information about Netwtw06.sys, so I was asked to contact to Intel.

If this issue is not fixed, we will not able to boot Windows 11 from iSCSI, which is a big problem.

I would like you to consider this issue again.
It's so easy to reproduce this issue, and anyone can reproduce this issue.

Thank you.

[saita]

I posted this question again on https://community.intel.com/t5/Wireless/Netwtw06-sys-crashes-when-shutting-down-on-Windows-11-2/m-p/1367088