The Update BureauKB5074975: Cumulative update for Windows Server, version 2019, December 2025. Message Queuing failures after December updates fixed
Fixes Message Queuing problems that could leave queues inactive or prevent applications from writing messages, mainly in enterprise or managed environments.
Does it affect you? Applies to: Devices running Windows Server 2019. The Message Queuing issue primarily affects enterprise or managed IT environments; personal devices running Windows Home or Pro are very unlikely to experience it.
Microsoft publishes separate notes for this KB for Windows 10.
What changes
Fix 1 change
Message queuing (MSMQ) (known issue)
For: Enterprise or managed IT environments
-
Message Queuing problems that could leave queues inactive or stop applications from writing messages are fixed for affected environments.1
The issue also affected clustered MSMQ environments under load and could produce insufficient-resource, message-creation, disk-space, or memory errors.
Improvement 1 change
Servicing stack
-
The component that installs Windows updates gets quality improvements.2
The update combines servicing stack update KB5070248 (build 17763.8020) with the latest cumulative update.
Technical details
Data sheet · Security · Downloads · Components Click to collapse or expand
Data sheet
- Released
- 2025-12-18
- Classification
- Updates
- Type
- Cumulative update
- Restart
- Required
- Replaces
- KB5071544, KB5068791, KB5070883, KB5066586
- Replaced by
- KB5073723
| Version | Build | Channel |
|---|---|---|
| 2019 | 17763.8148 | General availability |
Security
No vulnerabilities are listed for this update.
Downloads (Microsoft Update Catalog)
Updated components
276 files changed since the previous update for the same versions.
| Top changed components | Files |
|---|---|
| Audio | 5 |
| Hyper-V and virtualization | 4 |
| Networking | 2 |
| Graphics and display | 1 |
| Kernel | 1 |
| Secure Boot | 1 |
| Security and sign-in | 1 |
| Storage and file systems | 1 |
Sources
Cited passages from Microsoft's official notes (2)
-
1.
Fixed: After installing the Windows updates released on December 9, 2025, users experienced issues with the Message Queuing (MSMQ) functionality.
support.microsoft.com -
2.
This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.
support.microsoft.com
Checked automatically: 8 of 8 checks passed, 2 quoted passages · compared with Microsoft's page on Oct 21, 2026
- Quotes found in the official pages: passed
- Numbers found in the sources: passed
- Vulnerabilities from the dossier only: passed
- Links to allowed domains only: passed
- Every official change covered: passed
- Readable plain text: passed
- Changes confirmed by the file list: passed
- Sources agree: passed
A second AI read the text against the sources: correctness 4/5, clarity 4/5, completeness 5/5. How we work
Published by The Update Bureau. Written with AI from Microsoft's own documents, checked by rules and a second AI. How we work · Report a mistake