Networking breaks after install of 24H2

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[Susan Bradley]

Status: Investigating.  No acknowledgement from Microsoft

Seen several reports of this.  Mostly Dells, some Lenovos

Navigate to

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WcmSvc

In the DependOnService entry, remove WinHTTPAutoProxySvc from the list

Reboot

or

Navigate to

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinHttpAutoProxySvc

Change the Start entry from 4 (disabled) to 3 (manual)

Reboot

Another solution is:

“I have had 6 computers in the last week loose networking upon an update to 24H2. They all varied slightly, but in some cases, all network adapters were disabled and would not enable. In others they my show enabled and just not work. For example, wifi does not even show up in the task bar quick actions, only shows bluetooth or airplane mode. 1 Intel Nuc, 3 Dell laptops and 2 Lenovo laptops.”

found a fix that was posted on Microsoft Learn forum 17 pages in.

1. Remove the WinHTTPAutoProxySvc Dependency

Open regedit (Registry Editor).

Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WcmSvc.

Locate the DependOnService entry.

Remove WinHTTPAutoProxySvc from the list, leaving only RpcSs and NSI.

2. Enable the WinHTTP AutoProxy Service

In regedit, navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinHttpAutoProxySvc.

Locate the Start entry.

Change its value from 4 (disabled) to 3 (manual).

3. Modify Windows Connection Manager

Open Command Prompt (Admin).

Run the following command:

sc config WcmSvc depend= RpcSs/NSI

Susan Bradley Patch Lady/Prudent patcher

• This topic was modified 4 months, 1 week ago by Susan Bradley.

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Geoff Clarke, Travasaurus

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Haven’t had a problem with it on a Dell XPS8920 or MinisForum UM790Pro both running W11 24H2!

May the Forces of good computing be with you!

RG

PowerShell & VBA Rule!
Computer Specs

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Travasaurus, PL1, TechTango

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This may be more of an Enterprisey thing.  I’ve seen this reported more in businesses.

Susan Bradley Patch Lady/Prudent patcher

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Travasaurus

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I have not had any problems with a variety of Windows 11 Pro Dell computers (some which were of the ‘unapproved’ variety for Windows 11) as a result of said update, in small peer-to-peer network environments. Didn’t even know about it until Susan’s email just went out.

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DaveH52

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An easy-to-read explanation of the issue plus two PowerShell scripts – one to ‘detect’ whether there’s an issue with a service dependency; the other to ‘remediate’ the issue by changing that service dependency (by removing a registry setting) – has appeared on the PowerShellIsFun website:

There are articles and forum posts from people who upgraded to Windows 11 24H2 and are experiencing Wi-Fi issues. In this blog post, I will show you an Intune Remediation script that might fix the problem for your devices.

See Fixing Windows 11 24H2 – No Internet Access Issue using PowerShell and Intune Remediation for more info.

Note that you don’t need to be in a business/enterprise environment using Intune to use either PowerShell script. Intune is just used to simplify rolling out the scripts to multiple devices… but isn’t needed for home use.

Although the scripts were written as a result of the current issue with Windows 11 24H2, the same Windows Connection Manager service (and registry keys controlling it) exists in all versions of both Windows 11 and Windows 10. Here’s it in one of my old test devices:

Here’s the results of the ‘detection’ script run in Windows 10 Pro:

Note that you do not need an elevated PowerShell console for the ‘detection’ script as it is just ‘reading’ a setting, only for the ‘remediation’ script which ‘writes’ a change within the registry hive for the local machine (HKLM).

They’re both very simple, documented scripts – no arcane voodoo – to detect the presence of a registry setting and, if found, remove the setting and restart the Windows Connection Manager service.

I’m aware that this is a different take on this 24H2 networking issue, limited to mention of this being solely a Wi-Fi problem for some. For example, there is no mention of ‘missing or disabled’ network adapters that others have written about. However, I though it was worth posting the link for info.

Hope this helps…

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AlexEiffel, DaveH52, IT Manager Geek, Cybertooth

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“It’s a known bug in windows 11 24h2 that it does not send the dhcp option 77. We have opened a support ticket at Microsoft Support this fall. A fix should be released sometime within first half of 2025”
Per Salling from the Patchmanagement.org group.

Susan Bradley Patch Lady/Prudent patcher

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DaveH52

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The “DNS Cache” service also needs to be running in W11 24H2 for network access …

A few days ago I changed from 23H2 to 24H2 on my Windows 11 test partition (on an officially unsupported PC – to try help me decide if and/or when to buy a supported PC) using an in place installation from a setup .iso file and the “FlyBy11” mechanism (see https://www.ghacks.net/2025/01/17/this-is-the-simplest-option-to-upgrade-windows-11-on-unsupported-hardware/ ) and while everthing else looked OK, I ended up without network access.

Using a different partition I downloaded the latest W11 24H2 cumulative update from the catalogue and installed it to see if the problem in the .iso s/w had later been fixed. but I still had no network access. (When I later got network access, Windows Update needed to download and install this same CU again, but there do not seem to be any side-effects of this repeat.)

I tried running the network troubleshooter, but W11 just informed me that it could not access the Windows Store (obviously with no network access). So it appears as if to troubleshoot network access problems you need to have network access to download the network troubleshooter. Catch 22!

I did some more digging (using a browser in a different partition) and found information  similar to that described above, but that all looked present or had no effect in my case.

Knowing that Windows services are a tangled web of interdependencies I started working through them and found that something networky (I forget what) needed the DNS Cache service, which I had disabled. (MS do not allow this service to be disabled in the W11 user interface (Computer Management > Services and Applications > Services), but I had done this via the Registry to reduce the amount of background DNS Cache service internet activity. This service was not previously necessary for internet access in W11 23H2, W10 or earlier versions.)

So using the Registry I changed the W11 24H2 Dnscache Start value to 3 for Manual, restarted the PC and after some seconds (I did not time it) of no network access I got network access.

I then changed the W11 24H2 Dnscache Start value to 2 for Automatic, restarted the PC and got network access at a similar stage of the startup sequence as for earlier W11, W10 and earlier Windows. (The Panda AV needs to have network access at startup, so this seems the better choice in my case.)

So if like me you have previously disabled the DNS Cache service to reduce previously unnecessary background activity wasting processor cycles, you will need to allow it to run in W11 24H2 in order to get network access (in addition to the suggestions described in posts above).

HTH. Garbo.

PS 1: I left the W11 24H2 running, but idle for a couple of hours and there were about 6 or 8 DNS Cache service accesses in that time, far fewer than the situation which had led me to disable the service years ago, so something else had changed since then.

PS 2: I think I will continue with W10 on this perfectly fine PC for a while longer 🙂

 

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Rick Corbett, AlexEiffel, T-J-N, DaveH52, Cybertooth

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It is called “DNS Client” on my Win11 23H2 machine.

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DaveH52

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Thank you for your post!

In my case upgrading to 24H2 was a disaster, no internet. The problem was that none of the suggestions worked for me, the services were already correct.

I disabled the DNS Cache service when I installed Windows 11 22H2 Home in 2023 and thought recently that enabling it might solve the problem. I feel confident that this is it, but I will still wait to upgrade.

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Anyone know if this would be related to both Wireguard VPN  and Windows 11 24h2? We’ve seen it on several machines at work that have Wireguard installed on them but not at home

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I have a network of 3 DELL PC’s and since the update of 24H2 the home netorking is chaos, extisting mapped drives & printers are ok, but trying to map new network drives or printers, get a “network path cannot be found”. I can ‘see’ the other PC’s on the network but cannot connect anything ‘new’!! “Solutions” written on various forums including this one do not work. I’m not comfortable messing with the Registry as indicated by Susan, so are we in a ‘waiting for MS’ mode and having to put up with this mess? THANKS!!

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