# Computer can not see ethernet connection with board PYNQ-Z2 **URL:** \ **Category:** Support\ **Created:** [May 9, 2022, 8:27pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173 "2022-05-09T20:27:07Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![dexu4](https://avatars.discourse-cdn.com/v4/letter/d/7bcc69/32.png) [@dexu4](https://discuss.pynq.io/u/dexu4)\ **Post date:** [May 10, 2022, 1:28pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/21 "2022-05-10T13:28:33Z")
sorry for that here is full output: Windows IP Configuration Host Name . . . . . . . . . . . . : DESKTOP-IA80HBJ Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : [hs-bremen.de](http://hs-bremen.de) Ethernet adapter Ethernet: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Qualcomm Atheros AR8171/8175 PCI-E Gigabit Ethernet Controller (NDIS 6.30) Physical Address. . . . . . . . . : 4C-CC-6A-DE-9F-AD DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Unknown adapter ProtonVPN TUN: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : ProtonVPN Tunnel Physical Address. . . . . . . . . : DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Unknown adapter Połączenie lokalne: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : TAP-ProtonVPN Windows Adapter V9 Physical Address. . . . . . . . . : 00-FF-CE-FE-BA-23 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Wireless LAN adapter Połączenie lokalne\* 1: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter Physical Address. . . . . . . . . : 10-F0-05-9A-0D-CC DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Wireless LAN adapter Wi-Fi: Connection-specific DNS Suffix . : [hs-bremen.de](http://hs-bremen.de) Description . . . . . . . . . . . : Intel(R) Dual Band Wireless-AC 3168 Physical Address. . . . . . . . . : 10-F0-05-9A-0D-CB DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::8977:7614:96af:9af5%9(Preferred) IPv4 Address. . . . . . . . . . . : 172.31.11.160(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.0.0 Lease Obtained. . . . . . . . . . : wtorek, 10 maja 2022 12:27:31 Lease Expires . . . . . . . . . . : wtorek, 10 maja 2022 16:37:30 Default Gateway . . . . . . . . . : 172.31.255.254 DHCP Server . . . . . . . . . . . : 194.94.24.187 DHCPv6 IAID . . . . . . . . . . . : 84996101 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-21-56-1D-96-4C-CC-6A-DE-9F-AD DNS Servers . . . . . . . . . . . : 194.94.24.34 194.94.24.10 NetBIOS over Tcpip. . . . . . . . : Enabled Ethernet adapter Połączenie sieciowe Bluetooth 2: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network) #2 Physical Address. . . . . . . . . : 10-F0-05-9A-0D-CF DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes board pinging the computer ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/0/079b4cbac6a546cf6edd1eecd1661e626ee68e2f.png) ---
**Author:** ![briansune](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/briansune/32/3087_2.png) [@briansune](https://discuss.pynq.io/u/briansune)\ **Post date:** [May 10, 2022, 1:48pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/22 "2022-05-10T13:48:44Z")
The arp -a and arp -s is set under Windows not the Zynq board. Must sure you got my meaning right. Generally it is bounded by after 1st connections. Interface: 192.168.1.37 — 0x13 Internet Address Physical Address Type 192.168.1.1 04-d4-c4-45-9c-98 dynamic 192.168.1.39 0a-63-c4-90-1b-42 dynamic 192.168.1.53 26-b4-6b-82-fa-d4 dynamic \<\<\<\<\<\<\<\< 192.168.1.55 00-e0-4c-ea-2e-21 dynamic xilinx@pynq:/boot$ ping 192.168.1.37 PING 192.168.1.37 (192.168.1.37) 56(84) bytes of data. 64 bytes from 192.168.1.37: icmp\_seq=1 ttl=128 time=0.232 ms 64 bytes from 192.168.1.37: icmp\_seq=2 ttl=128 time=0.221 ms 64 bytes from 192.168.1.37: icmp\_seq=3 ttl=128 time=0.214 ms ^C — 192.168.1.37 ping statistics — 3 packets transmitted, 3 received, 0% packet loss, time 2083ms rtt min/avg/max/mdev = 0.214/0.222/0.232/0.007 ms xilinx@pynq:/boot$ ifconfig eth0: flags=4163\ mtu 1500 inet 192.168.1.53 netmask 255.255.255.0 broadcast 192.168.1.255 inet6 fe80::24b4:6bff:fe82:fad4 prefixlen 64 scopeid 0x20 ether 26:b4:6b:82:fa:d4 txqueuelen 1000 (Ethernet) RX packets 13521 bytes 2695190 (2.6 MB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 7108 bytes 7493793 (7.4 MB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 26 base 0xb000 ---
**Author:** ![cathalmccabe](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/cathalmccabe/32/3348_2.png) [@cathalmccabe](https://discuss.pynq.io/u/cathalmccabe)\ **Post date:** [May 10, 2022, 6:07pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/23 "2022-05-10T18:07:29Z")
From your screenshots your Ethernet is not connected or not configure. I would expect to see your Ethernet connection on your PC with the static IP address you configured for it. In both your screenshots ping isn’t working. Check you followed the instructions. If you are having problems with the direct connection to your PC, are you able to connect your board to your network? You might find this easier as you won’t have to configure anything. You will need to find the IP address of the board which you can do with `ip a` as you did above. Cathal ---
**Author:** ![dexu4](https://avatars.discourse-cdn.com/v4/letter/d/7bcc69/32.png) [@dexu4](https://discuss.pynq.io/u/dexu4)\ **Post date:** [May 11, 2022, 12:37pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/24 "2022-05-11T12:37:59Z")
I am not sure if I got your meanig right but here is how I understood it: typed in windows cmd: C:\Users\Michu\>arp -a Interface: 192.168.153.21 — 0xe Internet Address Physical Address Type 192.168.153.1 c4-ad-34-e3-87-d6 dynamic 224.0.0.22 01-00-5e-00-00-16 static 224.0.0.251 01-00-5e-00-00-fb static 239.255.255.250 01-00-5e-7f-ff-fa static 255.255.255.255 ff-ff-ff-ff-ff-ff static and then go to PUTTY: xilinx@pynq:~$ ping 192.168.153.21 ping: connect: Network is unreachable xilinx@pynq:~$ ifconfig eth0: flags=4099\ mtu 1500 ether 00:05:6b:02:c6:13 txqueuelen 1000 (Ethernet) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 28 base 0xb000 eth0:1: flags=4099\ mtu 1500 inet 192.168.2.99 netmask 255.255.255.0 broadcast 192.168.2.255 ether 00:05:6b:02:c6:13 txqueuelen 1000 (Ethernet) device interrupt 28 base 0xb000 lo: flags=73\ mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10 loop txqueuelen 1000 (Local Loopback) RX packets 1206 bytes 96013 (96.0 KB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 1206 bytes 96013 (96.0 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 ---
**Author:** ![briansune](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/briansune/32/3087_2.png) [@briansune](https://discuss.pynq.io/u/briansune)\ **Post date:** [May 11, 2022, 1:03pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/25 "2022-05-11T13:03:46Z")
Your board is not able to assign a valid IP address from ifconfig so this is why it is not working. So you didn’t do the IPV4 setup accordingly. Check subnet is in bound aka both host and device are in 192.168.2.xxx Check any thing are missed during the network setup procedure. ---
**Author:** ![dexu4](https://avatars.discourse-cdn.com/v4/letter/d/7bcc69/32.png) [@dexu4](https://discuss.pynq.io/u/dexu4)\ **Post date:** [May 11, 2022, 1:32pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/26 "2022-05-11T13:32:16Z")
Here is a thing after I run board I should see “undefined connection” here: ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/1/1fe8b99fd57c8539940989d88ddfd058e5f35059.png) but any of my computers don’t see it so I go to adapter seetings and setup this like here: ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/0/08d9a905579f8cb912ee8c46eea3b724babd3198.png) ---
**Author:** ![dexu4](https://avatars.discourse-cdn.com/v4/letter/d/7bcc69/32.png) [@dexu4](https://discuss.pynq.io/u/dexu4)\ **Post date:** [May 11, 2022, 1:34pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/27 "2022-05-11T13:34:40Z")
Sadlly i have no acces to router ---
**Author:** ![cathalmccabe](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/cathalmccabe/32/3348_2.png) [@cathalmccabe](https://discuss.pynq.io/u/cathalmccabe)\ **Post date:** [May 11, 2022, 1:53pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/28 "2022-05-11T13:53:31Z")
The screenshot from your PC network interface shows the Ethernet cable is unplugged. Can you make sure the cable is plugged in then run the following again and post the output: On PC: ipconfig /all On board: ip a Try ping again from board to PC and from PC to board. Cathal ---
**Author:** ![briansune](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/briansune/32/3087_2.png) [@briansune](https://discuss.pynq.io/u/briansune)\ **Post date:** [May 11, 2022, 8:45pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/29 "2022-05-11T20:45:39Z")
The easiest way is to check all IP in the current subnet and manually forcing 1 by replacing 2.99 on the board to the same subnet with your assigned IP. What I guess is that you are using WIFI on your PC and the board is plug to a wall or ethernet socket? ---
**Author:** ![dexu4](https://avatars.discourse-cdn.com/v4/letter/d/7bcc69/32.png) [@dexu4](https://discuss.pynq.io/u/dexu4)\ **Post date:** [May 12, 2022, 11:18am UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/30 "2022-05-12T11:18:31Z")
The Ethernet cable is plugged, I checked is cable okay and are the Ethernet ports in computers Okay by connecting two computers using same ethernet cable and it was working, computers could “see” each other. I start thinking that ethernet port on the board is not working. Btw. if I power the borad only one diode on the ethernet port is lighting, but I see that there is one more diode should it be also lighting? C:\Users\Michu\>ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : DESKTOP-6IBDSOR Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No Ethernet adapter Ethernet: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Realtek PCIe GbE Family Controller Physical Address. . . . . . . . . : 40-B0-76-AC-80-53 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Wireless LAN adapter Połączenie lokalne\* 1: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter Physical Address. . . . . . . . . : 50-EB-71-77-42-4C DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Wireless LAN adapter Połączenie lokalne\* 2: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #2 Physical Address. . . . . . . . . : 52-EB-71-77-42-4B DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Wireless LAN adapter Wi-Fi: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Intel(R) Wi-Fi 6 AX200 160MHz Physical Address. . . . . . . . . : 50-EB-71-77-42-4B DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IPv6 Address. . . . . . . . . . . : 2a00:c380:c101:5699:2190:2cf9:6a45:1f51(Preferred) Temporary IPv6 Address. . . . . . : 2a00:c380:c101:5699:cd39:b94b:fc2e:e4d8(Preferred) Link-local IPv6 Address . . . . . : fe80::2190:2cf9:6a45:1f51%14(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.153.21(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : Thursday, May 12, 2022 12:44:34 PM Lease Expires . . . . . . . . . . : Saturday, May 14, 2022 12:44:34 PM Default Gateway . . . . . . . . . : fe80::c6ad:34ff:fee3:87d6%14 192.168.153.1 DHCP Server . . . . . . . . . . . : 192.168.153.1 DHCPv6 IAID . . . . . . . . . . . : 122743665 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-29-B9-53-DE-40-B0-76-AC-80-53 DNS Servers . . . . . . . . . . . : 185.76.188.33 185.76.188.49 9.9.9.9 1.1.1.1 NetBIOS over Tcpip. . . . . . . . : Enabled Ethernet adapter Połączenie sieciowe Bluetooth: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network) Physical Address. . . . . . . . . : 50-EB-71-77-42-4F DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes C:\Users\Michu\>ping 192.168.2.99 Pinging 192.168.2.99 with 32 bytes of data: Reply from 192.168.153.1: Destination net unreachable. Reply from 192.168.153.1: Destination net unreachable. Reply from 192.168.153.1: Destination net unreachable. Reply from 192.168.153.1: Destination net unreachable. Ping statistics for 192.168.2.99: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/2/27b76068052c81f456417aa715c4660a6c8418aa.png) ---
**Author:** ![cathalmccabe](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/cathalmccabe/32/3348_2.png) [@cathalmccabe](https://discuss.pynq.io/u/cathalmccabe)\ **Post date:** [May 12, 2022, 11:34am UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/31 "2022-05-12T11:34:29Z")
This looks like there is come problem with the network interface on your PC. E.g. cable isn’t connected or there is some problem with the cable: > [@dexu4](#): > > Ethernet adapter Ethernet: > > Media State . . . . . . . . . . . : Media disconnected I can’t offer any more help or suggestions unless you can resolve this. You can try check the LEDs on your network ports yourself to see if they indicate anything. As an alternative, you could try use a USB dongle and connect the board to your WiFi and then connect to it from your PC over WiFi. Cathal ---
**Author:** ![briansune](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/briansune/32/3087_2.png) [@briansune](https://discuss.pynq.io/u/briansune)\ **Post date:** [May 13, 2022, 3:47am UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/32 "2022-05-13T03:47:05Z")
> [@dexu4](#): > > Default Gateway . . . . . . . . . : fe80::c6ad:34ff:fee3:87d6%14 > 192.168.153.1 What I see is that your PC connecting to WIFI. So you got to understand there are config when WIFI is connected Ethernet will be disable or not prioritized as packet T/R So disable the WIFI ipconfig again connect the board and tell us what is the result meantime ARP -a if you got a Ethernet and WIFI adapter connected should return two sets of lists Disable the WIFI just enable the Ethernet adapter and connect the board under CAT-5 or above cable to discuss what is the result. No offense modulator sometime won’t really help or provided experienced debug details as mostly only get bug from user or developer like us. Make sure your PYNQ board is set to the subnet of 192.168.153.xxx then see what is the result. ---
**Author:** ![cathalmccabe](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/cathalmccabe/32/3348_2.png) [@cathalmccabe](https://discuss.pynq.io/u/cathalmccabe)\ **Post date:** [May 13, 2022, 2:46pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/33 "2022-05-13T14:46:25Z")
I’m not sure what you mean by this. > No offense modulator sometime won’t really help or provided experienced debug details as mostly only get bug from user or developer like us. The Ethernet connection is showing as cable unplugged. Connection to the board will not work until this is resolved. It shouldn’t matter if the board is also connected to WiFi so you shouldn’t need to disable it. Cathal ---
**Author:** ![briansune](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/briansune/32/3087_2.png) [@briansune](https://discuss.pynq.io/u/briansune)\ **Post date:** [May 14, 2022, 12:25am UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/34 "2022-05-14T00:25:27Z")
What I am saying in nice manner is modulator not thinking in an non engineer ways aka expecting people to have backgrounds. Why the host PC is connected to WIFI and the board is connected to the ethernet will not work (when both devices are in the same subnet)? There are nothing to do with the PC connection method as long as it is in the same subnet. ---
**Author:** ![dexu4](https://avatars.discourse-cdn.com/v4/letter/d/7bcc69/32.png) [@dexu4](https://discuss.pynq.io/u/dexu4)\ **Post date:** [May 14, 2022, 1:27pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/35 "2022-05-14T13:27:54Z")
Sadlly it did not help ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/e/ed4b3853de75e2156c2a9fa93c36634dfd7b0c03.png) I will try with USB dongle after weekend ---
**Author:** ![briansune](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/briansune/32/3087_2.png) [@briansune](https://discuss.pynq.io/u/briansune)\ **Post date:** [May 15, 2022, 2:05am UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/36 "2022-05-15T02:05:12Z")
Now you dont even have any network connection devices: Open explorer: Control Panel\Network and Internet\Network Connections Disable other unnecessary connection devices remain 1 and only 1 than you plan to connect to the board subnet. ipconfig and check the current host ip address i.e. 192.168.1xx.xxx Then goto the board and then manually assign an ip address to 192.168.1xx.[free # 2 to 254]. Then ping on PC and board vice versa ---
**Author:** ![dexu4](https://avatars.discourse-cdn.com/v4/letter/d/7bcc69/32.png) [@dexu4](https://discuss.pynq.io/u/dexu4)\ **Post date:** [June 18, 2022, 4:55pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/37 "2022-06-18T16:55:27Z")
Hey guys My problem is solved, I did many things so I am not sure which one exactlly was a solution 1. I followed instructions under these two links: [https://answers.microsoft.com/en-us/windows/forum/all/unable-to-see-pcs-on-my-workgroup-network-id/896aac05-3df9-40f8-9a4b-5869d39d4418](https://answers.microsoft.com/en-us/windows/forum/all/unable-to-see-pcs-on-my-workgroup-network-id/896aac05-3df9-40f8-9a4b-5869d39d4418) [http://woshub.com/network-computers-not-showing-windows-10/](http://woshub.com/network-computers-not-showing-windows-10/) 2 Restart my computer 3 Disable all in my computer Wifi, bluetooth, VPN (just not ethernet ofcourse) 4 Run PYNQ-Z2 board 5 Connect computer with board via ethernet (I think it is important to first start up the board and let to flash all LEDs and after that plug ethernet cable) ---
**Author:** ![briansune](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/briansune/32/3087_2.png) [@briansune](https://discuss.pynq.io/u/briansune)\ **Post date:** [June 18, 2022, 8:17pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/38 "2022-06-18T20:17:57Z")
So at the end what is the subnet that you can connected to? Any modification are made in the IPV4 settings? ---
**Author:** ![dexu4](https://avatars.discourse-cdn.com/v4/letter/d/7bcc69/32.png) [@dexu4](https://discuss.pynq.io/u/dexu4)\ **Post date:** [June 18, 2022, 9:52pm UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/39 "2022-06-18T21:52:49Z")
No modification for IPV4, subnet I mean IP of the board is deafult, as far I understood what happend one of the windows updates diseabled detecion of some devices in the network. Anyway thanks for the help. ---
**Author:** ![briansune](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/briansune/32/3087_2.png) [@briansune](https://discuss.pynq.io/u/briansune)\ **Post date:** [June 19, 2022, 1:52am UTC](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173/40 "2022-06-19T01:52:45Z")
I will guess the explanation is not about Windows update nor the board itself. From your link i will think the PC is not turn on enable to discover in private network setting. This you can see and do test if this is the case and help out the setup procedure a bit. From my PYNQ 2.7 build to connection I had never touch any Windows settings nor the board network settings. Once it is flash to the SD card it is ready to run without any access issue. So maybe due to your environment limitation of network control you got to set your PC to private on network settings. [Previous page](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173.md?page=1) [Next page](https://discuss.pynq.io/t/computer-can-not-see-ethernet-connection-with-board-pynq-z2/4173.md?page=3)