NUC11PAHi7 becomes unreachable in network

[cunletni]

We have several NUC11PAHi7 in different networks and all of them have the same issue. We use a VNC server on each NUC and randomly it is impossible to connect to the NUC form inside the Network for up to 2 min but then it works again. During this time doing a Ping request for the NUC gives a timeout. However, if I am connected to the NUC with for example AnyDesk and try to ping computers from the NUC when the NUC is not reachable, this works. So the NUC is unreachable from the outside but have no issue to connect to other computers. The computers on the network have fixed IP. Updating the network driver did not help.

Ethernet product: Intel(R) Ethernet Controller I225-V

Edit: Currently trying a newer Bios version (0050) and looks promising so far.

[Steven_Intel]

Hello cunletni,

Thank you for posting on the Intel® communities.

I am sorry you are having issues with your Intel® NUC 11 Performance kit - NUC11PAHi7, I will be glad to assist you.

Please let me know if you encounter any more errors after the BIOS update.

Best regards,

Steven G.

Intel Customer Support Technician.

[cunletni · Accepted solution]

Updating the bios solved the issue.

For other people with same problems, I did the following:

1. Updating the Network driver to the latest version (currently 1.1.3.34 https://www.intel.com/content/www/us/en/download/767970/intel-ethernet-lan-driver-for-the-intel-nuc-11-performance-kits-nuc11pa-when-using-windows-10-or-windows-11.html) 
2. Setting "Speed & Duplex" to 100 Mbps Half Duplex (not sure if this is necessary)
3. Updating the Bios to latest version (currently 0050 https://www.intel.com/content/www/us/en/download/19694/bios-update-patgl357.html?wapkw=nuc11pahi7)

[Steven_Intel]

We are glad to know you found a solution, thank you for taking the time to share this fix, and hopefully, it may help other community members experiencing similar behavior. 

Since the thread is now solved, we will proceed to close it. Please keep in mind that this thread will no longer be monitored by Intel. 

Thank you for your understanding.  

Best regards,

Steven G.

Intel Customer Support Technician.