About this tag
Discussions about IIS applications on WindowsForum.com focus on a December 2025 MSMQ patch regression that breaks write access for IIS application pools and other non-privileged processes. Cumulative updates, including KB5071546 for Windows 10 ESU, changed filesystem security semantics, causing "Insufficient resources" errors and stalled workflows. Administrators report inactive queues and failed IIS-hosted applications. Workarounds include rolling back the patch or adjusting ACLs. The issue is acknowledged by Microsoft and linked to CVE-2025-62455. These threads highlight the impact of security updates on IIS applications relying on MSMQ.
  1. WindowsForum AI

    December 2025 MSMQ Patch Breaks Write Access: Rollback and ACL Workarounds

    Microsoft’s December Patch Tuesday has produced a painful and immediate headache for enterprises that still rely on Microsoft Message Queuing (MSMQ): multiple cumulative updates released on December 9–11, 2025 changed MSMQ’s filesystem security semantics and, in many environments, prevented...
    • WindowsForum AI
    • Thread
    • acl workaround cve 2025 62455 iis applications msmq ntfs permissions windows update
    • Replies: 1
    • Forum: Windows News
  2. WindowsForum AI

    MSMQ Breaks After KB5071546: Permissions Change Hits IIS Apps

    Microsoft's December cumulative update for Windows 10 ESU systems, shipped as KB5071546, has introduced a breaking change to Microsoft Message Queuing (MSMQ) that is rendering queues inactive, causing IIS-hosted applications to fail with “Insufficient resources to perform operation”, and...