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VitalieCiobanu's avatar
VitalieCiobanu
Copper Contributor
May 03, 2025

WiFi in Win11 issues in .3915

So i'm going crazy here and don't know where to go next, to Microsoft support or my internet provider... 

I've happily had Hyper-V on my Windows 11 Insider and some VMs i use for delivering trainings.

Few days ago i noticed i no longer can connect to the internet on the VMs. Existing VMs, new VMs, VMs with past snapshots applied, etc.... no internet on the VMs, period. 

I tried creating new switches several times and nothing helps.

However, although i don't need internet to deliver the trainings, when doing so at the university, i always use my host/laptop's internal card with a SIM in it and have no issues whatsoever with the internet in VMs.

The SIM i have is from the same provider as my home cable is from. I just turned off my WiFi and connected the cellular network. Boom! VMs instantly have internet access.

Turning on WiFi -> no internet again.

 

So at this point i'm kind of stuck and not sure where to go for help. Obviously there is nothing wrong with my Windows OS in general, but there is an issue with the WiFi. On the host, i have no issues with the WiFi, internet is fine and working properly. I'm shutting down my laptop every night, so "restarting" did not fix it.

Should i try resetting my router or go to Microsoft Windows support first? I think going to the internet provider has no benefit now, as they will blame the OS.

Any thoughts?

3 Replies

  • VitalieCiobanu's avatar
    VitalieCiobanu
    Copper Contributor

    As of this morning, the issue got fixed by itself. 

    No new version of Windows installed since yesterday, when it was 100% not working. No updates besides defender definitions, so not sure what the issue was and how it was fixed and by whom...

     

    E.T. playing around maybe :)

  • FinneasHayes's avatar
    FinneasHayes
    Iron Contributor

    This is the most compelling evidence. If the VMs can get internet through your cellular connection (which uses a different network adapter and potentially a different network configuration), it rules out a fundamental issue with the VMs themselves, Hyper-V's basic networking capabilities, or a general problem with your internet provider's service.

  • JettStone's avatar
    JettStone
    Iron Contributor

    Insider builds are pre-release versions and can sometimes introduce unexpected bugs or compatibility issues with specific hardware or configurations. The .3915 build might have a specific bug affecting Hyper-V and WiFi networking.

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