Microsoft has said that it’s actively investigating the VPN connection issues and plans to deliver a fix in an upcoming update. Microsoft provides a workaround for the L2TP VPN connections issue The reports suggest that users have also noticed this bug with some third-party VPN providers, including Cisco Meraki, SonicWall, Ubiquiti, WatchGuard Firewalls, as well as the WatchGuard client. The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer.” The problem has been reported by several IT administrators in a Reddit thread, which explains that users encountered a VPN connection error 789 when trying to use the Windows VPN client. VPN connections using Layer 2 Tunneling Protocol (L2TP) or IP security Internet Key Exchange (IPSEC IKE) might also be affected,” the company explained. “After installing KB5009543, IP Security (IPSEC) connections which contain a Vendor ID might fail. The Redmond giant confirmed on its Windows Health Dashboard yesterday that its recent cumulative updates for Windows 10 ( KB5009543) and Windows 11 ( KB5009566) are causing problems with select IPSEC connections. Microsoft has acknowledged a new bug that is preventing its built-in Windows client from connecting to a Virtual Private Network (VPN) and it has provided a workaround while it investigates the problem further.
L2tp vpn client Patch#
If you’ve been having issues with VPN connections after installing the January 2022 Patch Tuesday updates on your Windows PCs, you’re not alone.
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