NewsPublished 23 Sep 2026

Microsoft: September Windows updates break Always On VPN connections

Source Bleeping Computer

windows

Description

Microsoft warned that the September 2026 security updates may also break Always On VPN connections on some Windows 11 systems. [...]

Impact

Affected Windows 11 systems may experience failed or unstable Always On VPN connections, potentially disrupting remote access to enterprise networks. The issue specifically impacts VPN configurations that use automatic protocol selection, causing connection attempts to hang or fail with port conflicts. This may affect user productivity and access to corporate resources relying on Always On VPN.

Defensive guidance

Microsoft recommends that IT administrators temporarily mitigate the issue by changing the Always On VPN profile from automatic protocol selection to a single protocol, either SSTP only or IKEv2 only, based on their environment and security requirements. A permanent fix is pending from Microsoft. Organizations should monitor official Microsoft communications for updates and apply the permanent fix once available.

References

bleepingcomputer.com/news/microsoft/microsoft-september-2026-windows-updates-break-always-on-vpn-connections/ (opens in a new tab)

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Description

AI analysisMachine-generated, updated 23 Sep 2026, 11:33 UTC

References

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