Microsoft releases emergency Windows updates to fix RDS failures
Microsoft released emergency out-of-band Windows updates fixing Remote Desktop Services failures and Hyper-V issues caused by September 2026 security patches.
Microsoft issued out-of-band updates on September 14, 2026 to fix Remote Desktop Services instability introduced by the September security updates, which caused RDP connection and sign-in failures and unresponsive servers. Updates include KB5129194 (Windows 11 26H1), KB5129195 (Windows 11 24H2/25H2), KB5129236 (Windows 10), KB5129235 (Windows Server 2025), and KB5129237 (Windows Server 2022). The Windows 11 updates also fix a Hyper-V Plan9 shared folder issue and some USB Audio Class 1.0 multichannel problems, though remaining USB audio issues await a fix. Admins had previously used Group Policy mitigations or uninstalled the security updates, which removed security protections.
- RDS failures traced to September patches KB5122871 (Server 2025) and KB5122882 (Server 2022).
- Five out-of-band KBs cover Windows 10, Windows 11, and Windows Server 2019-2025 versions.
- Affected systems saw broken MMC, File Explorer, RDS Licensing Diagnoser, and Windows Update pages.
- Some USB Audio Class 1.0 device failures remain unresolved.
From the original article
2 min read at bleepingcomputer.com
Microsoft has released emergency out-of-band Windows updates to fix Remote Desktop Services failures caused by this month's security updates, along with Hyper-V and USB audio problems on some Windows versions. [...]
By Lawrence Abrams · bleepingcomputer.com
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