Windows Updates Cause RemoteApp Connection Failures in Azure Virtual Desktop
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Recent Windows updates, including the November 2025 KB5070311 non-security update, are causing RemoteApp connection failures in Azure Virtual Desktop environments on Windows 11 24H2/25H2 and Windows Server 2025 devices. This issue primarily affects enterprise users, leaving full desktop sessions unaffected. Microsoft has provided a temporary mitigation involving a registry key modification and a Known Issue Rollback (KIR) for Windows Pro and Enterprise devices. Affected organizations can manually add a registry key and restart the system to mitigate the issue. Microsoft is working on a permanent fix but has not provided a timeline.
Timeline
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18.12.2025 12:04 1 articles · 16h ago
Windows Updates Cause RemoteApp Connection Failures in Azure Virtual Desktop
Recent Windows updates, including the November 2025 KB5070311 non-security update, are causing RemoteApp connection failures in Azure Virtual Desktop environments on Windows 11 24H2/25H2 and Windows Server 2025 devices. This issue primarily affects enterprise users, leaving full desktop sessions unaffected. Microsoft has provided a temporary mitigation involving a registry key modification and a Known Issue Rollback (KIR) for Windows Pro and Enterprise devices. Affected organizations can manually add a registry key and restart the system to mitigate the issue. Microsoft is working on a permanent fix but has not provided a timeline.
Show sources
- Microsoft: Recent Windows updates break RemoteApp connections — www.bleepingcomputer.com — 18.12.2025 12:04
Information Snippets
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Recent Windows updates, including KB5070311, cause RemoteApp connection failures in Azure Virtual Desktop environments on Windows 11 24H2/25H2 and Windows Server 2025 devices.
First reported: 18.12.2025 12:041 source, 1 articleShow sources
- Microsoft: Recent Windows updates break RemoteApp connections — www.bleepingcomputer.com — 18.12.2025 12:04
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The issue primarily affects enterprise users, with full desktop sessions remaining unaffected.
First reported: 18.12.2025 12:041 source, 1 articleShow sources
- Microsoft: Recent Windows updates break RemoteApp connections — www.bleepingcomputer.com — 18.12.2025 12:04
-
Microsoft has provided a temporary mitigation involving a registry key modification and a Known Issue Rollback (KIR) for Windows Pro and Enterprise devices.
First reported: 18.12.2025 12:041 source, 1 articleShow sources
- Microsoft: Recent Windows updates break RemoteApp connections — www.bleepingcomputer.com — 18.12.2025 12:04
-
Affected organizations can manually add a registry key and restart the system to mitigate the issue.
First reported: 18.12.2025 12:041 source, 1 articleShow sources
- Microsoft: Recent Windows updates break RemoteApp connections — www.bleepingcomputer.com — 18.12.2025 12:04
-
Microsoft is working on a permanent fix but has not provided a timeline.
First reported: 18.12.2025 12:041 source, 1 articleShow sources
- Microsoft: Recent Windows updates break RemoteApp connections — www.bleepingcomputer.com — 18.12.2025 12:04
Similar Happenings
Microsoft December 2025 Updates Break Message Queuing Functionality
Microsoft's December 2025 security updates caused Message Queuing (MSMQ) failures across Windows 10 22H2, Windows Server 2019, and Windows Server 2016 systems. The issue arose from security model changes that modified permissions on a critical system folder, leading to errors in MSMQ queues and IIS sites. Affected systems experienced inactive queues, resource errors, and application failures. Microsoft has released an out-of-band update (KB5074976) via Update Catalog to address the issue. The company initially advised enterprise customers to contact support for a temporary workaround, and the update is now available for download.