Microsoft: Recent Windows updates may trigger Remote Desktop failures

Windows admins report that the September 2026 security updates are causing Remote Desktop Services (RDS) failures on Windows Server 2019, 2022, and 2025 servers, preventing users

Microsoft has confirmed a new issue causing newly introduced Windows security warnings to display incorrectly when opening Remote Desktop (.rdp) files. [...]

Microsoft has fixed a known issue causing newly introduced Windows security warnings to display incorrectly when opening Remote Desktop (.rdp) files. [...]

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

Microsoft has confirmed that some users may experience desktop loading issues, including black screens, after installing the August 2026 preview updates and subsequent updates.

Microsoft has introduced new Windows protections to defend against phishing attacks that abuse Remote Desktop connection (.rdp) files, adding warnings and disabling risky shared