Problem in network Windows 11 24h2

After updating to the new Windows 11h2, some machines experienced network issues with both cable and Wi-Fi. They connect but don’t get network access and receive an IP address starting with 169…, resulting in no internet or network connection. I updated drivers, firmware, and reset the network settings. The machines’ MAC addresses haven’t changed. Does anyone know what could be causing this?

Roberson,

Veja se você tem a opção 43 habilitada no seu DHCP Server.

Resolvi o problema aqui desativando essa opção.

Cara, como mencionei no post acima.

Resolvi esse problema desativando a opção 43 no escopo DHCP.

É provável que o roteador da VIVO esteja com essa opção no DHCP Server habilitada. Tenta verificar se tem opções de escopo habilitado no DHCP Server do roteador.

This is what I have found so far, I have 2 PCs and a Laptop, the PCs are almost identical except one is built in graphics (PC1) and the other has a card (PC2)

PC1 has had the problem of not connecting to the Internet sometimes, both resuming from Sleep and Win-X U Restart. I have tried various things in this long thread and disabling IPv6 in the adaptor settings does help, before that it was a nightmare trying to get an Internet connection. At least now it sometimes connects on resuming from sleep

Here is what I found though it does appear to be a timing problem with the Network Adaptor not finding the connection that is causing it, if after resuming or a Restart and it comes up with No Internet, disabling the adaptor and waiting approx 30-40 seconds then re-enabling it, it finds the connection, there is the odd occasion I have to use the Diagnose option and Restart the Adaptor to get it to work.

PC2 & Laptop were updated to 24h2 quite a while after PC1 and have never had the problem.

Microsoft really needs to get this sorted out.

We had the same issue, and we rolled back to 23H2

I found a workaround: the DHCP is having issues, but if you set a static IP, it works.

Apparently, there is some problem with the DHCP.