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Interesting the IP provider did a reboot on their end with nothing attached and it worked. Have to make a note of that trick.
How to correct an unidentified network problem after installing Windows 10 1909?
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Ghislain Plante
21
Reputation points
After installing Windows 10 update 1909 I no longer have internet access.
With troubleshoot I have: device is connected but cannot access the network.
With the problem solving I have: Ethernet does not have a valid ip configuration. I checked the configuration for Ipv4 and it is good.
In network and sharing center I have: Unidentified network / public network, Access: Ethernet (no network access).
I deactivated the network card and after I activated it and restart my computer, the problem persists.
On the router the port where my computer is connected the light flashes and on my computer the connection flashes.
The network card:
Intel (R) 8279V Gigabit
Manufacturer: Intel Corporation
Driver version: 12.17.10.8.
How to correct this problem?
Can I uninstall update 1909 to correct this problem?
I'm in despair, I need a job name and internet access !!!!!!!!
Excuse my English is a Google translation.
Ghislain Plante
Accepted answer
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Sean Liming 4,601 Reputation points2020-03-07T15:59:30.9+00:00 -
Tripredacus 151 Reputation points2020-03-10T20:26:55.727+00:00 Network devices retain MAC address information and a problem can occur if you change what is connected to the device without rebooting it. It is a normal process (for example) with a cable modem, to disconnect its network port, reboot it and then reconnect. Having no device connected on power up will clear the remembered MAC address, connecting the cable again with make it remember the new one. This wouldn't be required for an OS upgrade, unless the client's MAC Address changed, or the data was corrupted in the device memory.
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7 additional answers
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Ghislain Plante 21 Reputation points
2020-03-06T20:35:47.777+00:00 513/5000
I contacted my internet provider because they are the ones who provide me with the router.They asked me to disconnect the RJ45 cable from the router. They restarted the router and told me to wait 5 minutes before reconnecting the rj45.
After this time I reconnected the cable rj45 and it works, I have access to the internet.
Quite a coincidence that the router fell into trouble after updating Windows 1909.
Problem solved.
Thank you very much for the time you took to help me !!!!!!!!
Ghislain Plante
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Anonymous2020-03-06T20:46:44.65+00:00 Sounds good, you're welcome.
(please don't forget to mark helpful replies as answer)
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Joy qiao 881 Reputation points2020-03-12T05:52:06.447+00:00 Hi,
Thank you for posting in Microsoft Q&A.
According to your description, your issue seems more related with Network. As the Network topic have not moved to Microsoft Q&A yet, please kindly re-post your issue to forum TechNet.Note that TechNet is retiring soon, and all supported forums would be moved to Microsoft Q&A later in April or May. Please watch out for our future announcements.
Looking forward to read your new post then in Microsoft Q&A!