Windows 10 Windows 10 Update 2022-01 Breaks VPN

  • Thread starter Thread starter MrMannn
  • Start date Start date
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MrMannn

Today's update seems to have broken our company's VPN. We're using the built-in Windows client L2TP with digital certificate. All staff who have installed the update are experiencing the issue and uninstalling the update fixes it.What happens when clicking Connect on the VPN is I'm immediately shown this message:"The L2TP connection attempt failed because the security layer encountered a processing error during the initial negotiations with the remote computer."Event viewer also logs EventID 20227 with RAS code 789.I read somewhere the update includes a security patch to IKE. I assume that

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