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Microsoft reverts fix status for Always On VPN failures on Windows 11 after October 2026 updates; workaround issued

1 fonte(s) · 1 atualização(ões) · publicado 21/10/2026 07:14 · coletado há 2 dias

Microsoft says it mistakenly marked a bug affecting Always On VPN connections as resolved in the October 2026 Patch Tuesday cumulative updates for Windows 11. The status was reverted to Mitigated, and a permanent fix is planned for an update "in the coming weeks". The issue first appeared after the September 2026 security updates on Windows 11 24H2 and later. It is a reliability problem, not a security vulnerability, and the article reports no exploitation.

Detalhes técnicos

  • Affected: systems running Windows 11 24H2 and later with the September 2026 security updates, when the initial Always On VPN connection attempt fails (e.g. automatic protocol selection with IKEv2 and SSTP).
  • Symptoms: connections stay stuck in a Connecting state or fail after an initial failed attempt. Later attempts may show the error "The specified port is already in use."
  • The service alert was wrongly set to Resolved on October 13, 2026 and returned to Mitigated in a Tuesday update.
  • The September cumulative updates were also linked to other problems: Hyper-V issues, Remote Desktop Services failures, USB audio problems (fixed with emergency out-of-band updates), domain credential login failures (temporary workaround issued), and a broken File History backup feature (fix in progress).

Remediação

  • Change the Always On VPN profile from automatic protocol selection to a single protocol, either SSTP only or IKEv2 only.
  • Choose the protocol according to the environment, security and deployment requirements.
  • Watch for the upcoming update that Microsoft says will contain the permanent fix.

Linha do tempo

  1. bleepingcomputer.com ↗ · pub. 21/10/2026 07:14 · coletado 21/10 08:00 primeiro registro

    Microsoft reverts fix status for Always On VPN failures on Windows 11 after October 2026 updates; workaround issued

    ler a análise desta fonte

    Microsoft says it mistakenly marked a bug affecting Always On VPN connections as resolved in the October 2026 Patch Tuesday cumulative updates for Windows 11. The status was reverted to Mitigated, and a permanent fix is planned for an update "in the coming weeks". The issue first appeared after the September 2026 security updates on Windows 11 24H2 and later. It is a reliability problem, not a security vulnerability, and the article reports no exploitation.

    Technical Details

    • Affected: systems running Windows 11 24H2 and later with the September 2026 security updates, when the initial Always On VPN connection attempt fails (e.g. automatic protocol selection with IKEv2 and SSTP).
    • Symptoms: connections stay stuck in a Connecting state or fail after an initial failed attempt. Later attempts may show the error "The specified port is already in use."
    • The service alert was wrongly set to Resolved on October 13, 2026 and returned to Mitigated in a Tuesday update.
    • The September cumulative updates were also linked to other problems: Hyper-V issues, Remote Desktop Services failures, USB audio problems (fixed with emergency out-of-band updates), domain credential login failures (temporary workaround issued), and a broken File History backup feature (fix in progress).

    Remediation

    • Change the Always On VPN profile from automatic protocol selection to a single protocol, either SSTP only or IKEv2 only.
    • Choose the protocol according to the environment, security and deployment requirements.
    • Watch for the upcoming update that Microsoft says will contain the permanent fix.