Is KB5026372 causing an issue with VPN connections?

Anonymous
2023-05-19T12:42:04+00:00

We have a number of users that have had recent updates of KB5026372 and this has seemingly stopped their VPNs from connecting (loses connection instantly as soon as VPN connected, no more internet access), we use L2TP/IPsec with pre shared key. We have troubleshooted this with the network team, but nothing has changed and they are confident its not an issue caused by us. I have uninstalled KB5026372 on my machine, which had the issue also and then VPN works. Issue we have here is that our updates are handled automatically and it will pull down the updates again and install. Only solution is to pause updates for a set period of time in the hope that this gets resolved in a future update.

Has anyone else reported these issues? I have seen a few articles online regarding this and slowness of some VPNs after the update (which i had before it eventually just stopped working), but no solution other than uninstall.

Windows for home | Windows 11 | Windows update

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Anonymous
2023-05-19T13:20:43+00:00

Hello! My name is Mostafa, and I will try my best to assist you with this so that you find a satisfactory solution.

I’m sorry that you are experiencing this issue. Yes, many users have been reports of VPN connection issues after installing KB5026372. The update is causing problems with VPN connections, especially L2TP/IPSec VPNs.

If your updates are handled automatically, and it will pull down the updates again and install, you can pause updates for a set period in the hope that this gets resolved in a future update.

Go to Settings > Update & Security > Windows Update to pause Windows Update. You can click Pause updates for seven days to block updates for a week; extending this time by clicking again later is possible.

Review the below article.

https://www.windowslatest.com/2023/05/13/window...

If the above steps do not help, reach out to me, and I will be happy to help and try my best to resolve your issue. Thank you.

Best,

Mostafa

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  1. Anonymous
    2023-06-28T20:01:29+00:00

    Thanks Keith,

    Unfortunately, they broke VPN back in January of this year! Only that time you couldn't even connect to L2TP VPN's, this time it connects and then dies :(

    Yeah, I saw that Microsoft acknowledged this back in May but they've not fixed it as far as I know. Terrible to not even provide updated status.

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  2. Anonymous
    2023-06-28T19:52:06+00:00

    No, I have seen no mention of it anywhere and it has gotten WORSE in the fact that the last monthly update removed the ability to Uninstaller the problem update.

    I dont know who to reach out to. This has to be affecting countless users.

    And it's not yhe first time!!

    They broke vpn back in 2012 with an update too!!

    Original tech blogs said Microsoft was aware and would put out a fix in weeks.......

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  3. Anonymous
    2023-06-28T19:33:17+00:00

    It's been over a month and a half since this update destroyed L2TP VPN speeds, Windows 11, and over a month since this post. Has there really been no progress or discussion since then? Is there still no permanent fix?

    We have devices and that getting "re-affected" and uninstalling all updates is not a widely acceptable answer.

    Thank you,

    Andy Craig

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  4. Anonymous
    2023-06-27T11:35:32+00:00

    The only other option so far has been to switch back to Windows 10.

    ![](https://learn-attachment.microsoft.com/api/attachments/2a91ed04-bcb4-4f2a-a62c-12178a59ea8f?platform=QnA

    Setting the service from Disabled to Automatic for "Routing and Remote Access" has fixed it for me.

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