X550-T2 Driver 4.1.260.0 not compatible?

[Lu-Max]

I have an Intel X550-T2 10G Converged Network Adapter card in my Windows 11 Pro PC. This card was specifically validated as authentic by Intel Tech Support, it's not a fake one from eBay.

Intel Driver and Support Assistant software showed a driver update for this card, so I installed it first via the Intel website but the card would not start or run after the update, even after a reboot. The new version is 4.1.260.0, 6/1/2024. So I rolled back to the previous driver that functioned perfectly, version 4.1.254.0  2/8/2024.

After reboot the card once again functioned perfectly.

I then downloaded the compressed file and installed the driver manually with the exact same results. The card would not start or run with the new driver. Intel shows that this card is compatible with the new driver.

I'm not sure why it didn't work, so posting here.

Attached are screen captures, image1 -> image6 show the failed driver update attempt, image7 -> image9 shows after the rollback and card functioning properly again. Image10 is a typical speed test at my house.

Any advice?

Is the new driver compatible with this network card? Did I misread the posted info?

Thanks in advance. Tim

p.s. I'm not a network admin, just a home user with a fairly advanced home network and 10G fiber service at my house.

[Kaz24]

I have the exact same issue with authentic intel card.

In fact, the same issue happened few months back too, and i rolled backed and instantly started to work.

Intel Driver and Support Assistant software updated my network drivers again today, and same problem happened today. Lost internet connection immediately and device manager showed that the card driver wasn't working properly. Rolled back driver, and instantly started working.

[Lu-Max]

I just did an extended live chat with Intel Tech Support. The agent said "Thank you for confirming the details. We will now create a new case and the required information will be shared to you via email."

I'll update this thread when I hear from them. Stay tuned.

[Lu-Max]

So after about a week of back-and-forth emails, here is a brief summary of what they had me do (each tick represents a separate email):

-Send in high-res photos of my X550-T2 card to (once again) prove that it is genuine Intel, include PC system details as well as the "link" where I was downloading the updated driver from (I was utilizing the Intel Driver & Support Assistant).

-Next they wanted to know if the card came with the system or was a separate purchase (it was separate), what the current (functioning) driver version was, and to send screenshots of all errors I was getting to prove that it would not run using the updated driver.

-Yet again they asked where I was downloading the driver update from.

-Then they had me download the new driver from the specific card support/downloads page.

-Next they had me download the "Intel Ethernet Adapter Complete Driver Pack" and sent me the link to it. (https://www.intel.com/content/www/us/en/download/15084/intel-ethernet-adapter-complete-driver-pack.html)

-This extracted file download is big, and there were no instructions which specific folder to load the driver from. I emailed them back and they replied with a specific clarification. I tried that driver with the same failure. I once again sent detailed screen captures of the entire process, showing that the card would not start or run using the new driver even after system reboots.

-They replied "Thank you for writing back and sharing the screenshots of the steps and issue. We will look into it again and will get back to you again with updates/any latest developments."

So that's were I am at now.

The newest driver that works with the X550-T2 card in W11 x64 sytem is 4.1.254.0, the new driver that failed each time is 4.1.260.0. FWIW, teh driver previous to 4.1.260.0 also failed in the exact same way.

I will update when I hear back. Thanks.

[Ryan-yu]

I have same issue, My x550-t2,

I upgrade NVM, and BootIMG . And test driver version 29.4 and 29.5 , but all fail, roll back to 29.3

My OS: Win11 Pro workstation , exp 1000.22700.1055.0 .

[PatchDev]

Any more news on this? I see another update has been released, but still fails to work on the 10G 2P X550-t?

[Brotel]

I went through those exact same steps. Finally they fixed the x710 10GbE card 2 days ago, but they x550 cars are still broken.

[Lu-Max]

Intel asked me to verify my NVM version, but following their prescribed procedures, but I got the following:

PS C:\Users\Tim> Get-IntelNetAdapter

Get-IntelNetAdapter : The term 'Get-IntelNetAdapter' is not recognized as the name of a cmdlet, function, script file,

or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and

try again.

At line:1 char:1

+ Get-IntelNetAdapter

+ ~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : ObjectNotFound: (Get-IntelNetAdapter:String) [], CommandNotFoundException

    + FullyQualifiedErrorId : CommandNotFoundException

So I have no idea what my NVM version might be.

They also asked me to install the drivers from the large driver package file in this manner, but it also was unsuccessful.

Can you please install the drivers through Device Manager > Select the adapter > right-click > select Properties > click the Driver tab > and then click 'Update Driver' > Navigate to the folder containing the 29.5 driver pack.
"\Release_29.5\PROXGB\Winx64\W11"

[Sachinks]

Hello Lu-Max,

Thank you for posting in the Intel Community. We sincerely apologize for the delay in our response. We have received your concern and would like to assure you that assisting you is our top priority.

Could you kindly let us know if the issue has been resolved, or if you require further assistance from us? Your prompt response will greatly help us in diagnosing and resolving the issue as quickly as possible.

We appreciate your patience and understanding, and we look forward to hearing from you soon.

Regards,

Sachin KS

Intel Customer Support Technician

[Sachinks]

Hello Lu-Max,

Good day!

This is a follow up. Could you kindly let us know if the issue has been resolved, or if you require further assistance from us? Your prompt response will greatly help us in diagnosing and resolving the issue as quickly as possible.

We appreciate your patience and understanding, and we look forward to hearing from you soon.

Regards,

Sachin KS

Intel Customer Support Technician

[Sachinks]

Hello Lu-Max,

Greetings for the day!

We would like to inform you that we are closing this request as no response has been received from our previous follow-ups. 

Please don't hesitate to ask any further questions in the future. Feel free to start a new conversation, as this thread will no longer be monitored.

Regards,

Sachin KS

Intel Customer Support Technician

[PC-Junkie]

The problem persists. Even with the current driver packet version 30.5, only driver 4.1.254.0 works. Driver 4.1.267.0 fails. NVM firmware update 3.70 doesn't change anything either. I also bought an original genuine X550-T2. Intel should finally fix this bug. After all, it's been around for two years now.

[Lu-Max]

I was able to get driver 4.1.267.0 to install and run normally on my X550-T2 using the latest installation Windows11-64 downloadable on Intel. I get very good speeds on my Sonic 10G Fiber broadband.

[PC-Junkie]

Thanks for the good news. Didn´t expect you still watching this thread and i´m very happy to see you back here. I´m still using Windows 10 x64 - 21H2 build 19044 which shall still be supported as the readme from driver package 30.5 tells but maybe they are not testing the compatibility with Windows 10 anymore. I will download the Windows 11 driver version and try if that is working for me too as they are very similar OS. I´m back here tomorrow and tell the result.

[PC-Junkie]

Well i could try it right away and there is no difference. It still doesn´t work. So i will make a test tomorrow with a fresh Windows 11 installment and report back. Maybe there is a difference between both OS. I have to find out. Which version of Windows 11 are you using?

[PC-Junkie · Accepted solution]

With Windows 11, the latest drivers were finally installed correctly on my system and are working perfectly. This means that Windows 10 is no longer supported starting with package version 30.5, even though the latest drivers are still dated September 2025 and Windows 10 support only officially ended in October (which, incidentally, doesn't yet apply to the IoT Enterprise LTSC 2021, which is supported until 2031). Furthermore, the driver is officially listed as supported by Intel for Windows 10 21H2 Build 19044 in the 30.5 readme file. All of this is neither user-friendly nor reliable. Unfortunately, I guess we'll just have to live with it. I'm switching to Linux Mint anyway, as I don't like Windows 11 at all.