MSMQ Archives

Winsage

December 23, 2025

Microsoft fixes Message Queuing issue in new update

Microsoft has released an out-of-band update to fix a Message Queuing (MSMQ) issue that arose after the December 2025 update. This patch is available for several Windows versions, including Windows 10 22H2 ESU, Windows 10 Enterprise LTSC 2021, and Windows 10 LTSB 2016, as well as various Windows Server versions from 2008 to 2019. The issue primarily impacted enterprise environments, while users on Pro and Home editions were "very unlikely" to experience it. The root cause was a change requiring MSMQ to have write access to areas typically restricted, leading to message queuing disruptions and misleading error logs. Microsoft documented the known issue on December 12, 2025, after several days of recognition, during which administrators had to implement workarounds. The update addresses the problem but raises concerns about Microsoft's quality assurance practices, especially given MSMQ's importance in corporate infrastructures. Users expressed dissatisfaction due to service disruptions caused by the issue.

Winsage

December 21, 2025

Windows emergency update fixes MSMQ faults after December patchday

Microsoft has released emergency updates to address malfunctions with Windows Message Queuing (MSMQ) that occurred after the December security updates. The issues affect several versions of Microsoft Windows, including Windows 10 and various editions of Windows Server up to Server 2019, posing a risk of application outages for users relying on MSMQ. The problem arose from changes to the MSMQ security model, which modified NTFS access rights to the C:WindowsSystem32MSMQstorage folder, stripping applications or services without administrative rights of necessary write permissions. The updates are identified by knowledgebase numbers: KB5074976 for Windows 10, KB5074975 for Windows Server 2019, and KB5074974 for Windows Server 2016, raising Windows 10 build numbers to 19044.6693 and 19045.6693. Initially, these updates were not available through the standard Windows update function and could only be accessed via the Windows update catalog. Microsoft has expanded the list of affected systems to include earlier versions of Windows 10 (21H2, 1809, and 1607) and Windows Server 2012 R2 and 2012. Users of these systems should verify the application of December updates and manually install the emergency updates if necessary.

Winsage

December 20, 2025

Windows RemoteApp problems, ferry malware arrest, Senator’s open-source warning

Microsoft's December 2025 security update disrupts Message Queuing (MSMQ) on older Windows 10 and Server systems. A subsequent November 2025 update causes RemoteApp connection failures on Windows 11 24H2/25H2 and Windows Server 2025 devices, particularly in Azure Virtual Desktop environments, although Windows Home or Pro editions remain unaffected. French authorities arrested two crew members of an Italian ferry for allegedly installing malware that could allow remote control of the vessel; one suspect has been released while the other is in custody. Tom Cotton, Chairman of the Senate Intelligence Committee, has urged action on vulnerabilities in open-source software, citing concerns about foreign adversaries inserting malicious code. A zero-day exploit, CVE-2025-20393, affecting Cisco email security products has been exploited by Chinese hackers since late November. DXS International reported a cybersecurity incident involving unauthorized access to its internal servers, with an investigation ongoing. A report from Resecurity indicates a rise in the criminal use of DIG AI for generating tips for illegal activities. CISA warned of a critical vulnerability in ASUS Live Update software, which has been actively exploited. An automated campaign targeting multiple VPN platforms has been reported, with credential-based attacks observed on Palo Alto Networks GlobalProtect and Cisco SSL VPN.

Winsage

December 19, 2025

Microsoft patches bug causing multiple Message Queuing errors

Microsoft released an out-of-band update (KB5074976) on December 19 to address Message Queuing (MSMQ) errors caused by December 2025 security updates. These updates have led to operational disruptions in business applications and IIS websites, particularly on systems running Windows 10 22H2, Windows Server 2019, and Windows Server 2016, which received updates KB5071546, KB5071544, and KB5071543. Users reported issues such as inactive MSMQ queues, IIS sites generating "insufficient resources" error messages, and applications unable to write messages to queues. The problems stem from modifications in the MSMQ security model, which altered permissions for the system folder C:WindowsSystem32msmqstorage, requiring MSMQ users to have write access typically reserved for administrators. Systems with full administrative rights do not experience these issues. Microsoft is investigating the matter but has not provided a timeline for a resolution.

Winsage

December 17, 2025

Microsoft security updates breaks MSMQ on older Win systems

Microsoft has acknowledged that Message Queuing (MSMQ) may fail on certain Windows 10 devices and older Windows Server versions after the December 2025 Security update. Reported issues include MSMQ queues becoming inactive, IIS sites generating "Insufficient resources to perform operation" errors, and applications failing to write to queues. System logs may show misleading messages about insufficient disk space or memory due to folder permissions and MSMQ's write access requirements. The root cause is linked to changes in the MSMQ security model and NTFS permissions for the C:WindowsSystem32MSMQstorage folder, which now requires write access typically restricted to administrators. This issue primarily affects Windows 10 versions 22H2 and earlier, as well as Windows Server versions 2012 to 2019, with minimal impact on Windows Home or Pro editions. Microsoft recommends contacting support for workarounds, and some users have resolved the issue by uninstalling the update, though this would remove security enhancements. The problems are confined to older operating systems often used by enterprises delaying upgrades.

Winsage

December 17, 2025

Microsoft asks IT admins to reach out for Windows IIS failures fix

Microsoft has informed the business community about a known issue with Message Queuing (MSMQ) affecting enterprise applications and Internet Information Services (IIS) sites. This problem primarily impacts users on Windows 10 22H2, Windows Server 2019, and Windows Server 2016 who installed specific security updates (KB5071546, KB5071544, and KB5071543) released in December 2025. Symptoms include inactive MSMQ queues, applications unable to write to queues, IIS sites failing with "insufficient resources" errors, and misleading messages about disk space or memory. The issue stems from changes to the MSMQ security model that altered permissions on the C:WindowsSystem32MSMQstorage folder, requiring MSMQ users to have write access to a directory typically restricted to administrators. Microsoft has not provided a timeline for a fix and suggests affected IT administrators contact their support team for temporary workarounds or consider rolling back the updates.

Winsage

December 17, 2025

Microsoft: December security updates cause Message Queuing failures

Microsoft has acknowledged a significant issue with the December 2025 security updates that disrupts Message Queuing (MSMQ) functionality, affecting enterprise applications and Internet Information Services (IIS) websites. The problem is prevalent among systems running Windows 10 22H2, Windows Server 2019, and Windows Server 2016 with security updates KB5071546, KB5071544, and KB5071543. Users are experiencing inactive MSMQ queues, IIS sites failing with "insufficient resources" errors, applications unable to write to queues, and misleading error messages about "insufficient disk space or memory." The root cause is changes to the MSMQ security model that altered permissions on the C:WindowsSystem32MSMQstorage folder, requiring MSMQ users to have write access to a directory typically reserved for administrators. Devices with users logged in as administrators are not affected. Microsoft is investigating the issue but has not provided a timeline for resolution. Rolling back the updates is a potential solution for administrators, though it carries security risks. This follows a warning from Microsoft in April 2023 about a critical vulnerability in the MSMQ service.

Winsage

December 16, 2025

Microsoft warns of problems with Windows 10 extended updates

Microsoft's KB5071546 update is causing significant disruptions to the Message Queuing (MSMQ) functionality, impacting businesses that rely on MSMQ. Symptoms include inactive MSMQ queues, IIS site failures with "Insufficient resources to perform operation" errors, applications unable to write to queues, and misleading error logs. The issue is linked to changes in the MSMQ security model and NTFS permissions on the C:WindowsSystem32MSMQstorage folder, requiring users to have write access typically reserved for administrators. Microsoft is investigating the issue and has not yet provided a remedy. Affected users can either roll back to a previous state or manually uninstall the update.

Winsage

December 16, 2025

Microsoft admits Windows 10’s extended updates are causing issues, MSMQ won’t work

Microsoft has acknowledged a significant issue with the December 2025 Patch update (KB5071546) for Windows 10, affecting the Message Queuing (MSMQ) component, which is primarily used by enterprise applications. The update altered MSMQ's operational dynamics and modified NTFS permissions for its storage directory, requiring write access that many real-world implementations do not have. This has led to operational failures, with users experiencing error messages indicating insufficient resources. Reports indicate that uninstalling the update restores MSMQ functionality. Microsoft is investigating these issues, which also impact clustered MSMQ environments under load, but does not affect Windows 11. Users are advised to uninstall the update to resolve MSMQ issues.