Microsoft Fixes Remote Desktop Connection Failures Caused by Recent Windows Updates

Microsoft has addressed a known issue that previously prevented non-admin users from connecting to devices via Remote Desktop when the "Administrator protection" security feature was enabled. According to Microsoft, the problem emerged after the installation of specific recent Windows updates on systems running Windows 11 version 24H2 and later.

Overview of the Issue

The complication specifically impacted enterprise-managed remote devices configured as Remote Desktop hosts while Administrator protection was enabled. When standard users attempted connections, they encountered error 0xC000000D. The Administrator protection feature itself is designed to prompt standard users to authenticate using Windows Hello, such as a PIN or biometrics, whenever system changes like Windows Registry modifications or app installations are attempted. The feature began rolling out in October 2025 and became enabled by default in organizations utilizing Windows security baselines following the October 2026 security update.

Resolution and Updates

Microsoft confirmed that the Remote Desktop connection failures have been resolved for users who install the KB5127936 preview update released on October 28, 2026, or subsequent Windows updates.

• Recommended Action: Users and administrators are advised to install the latest available security updates for their devices, as these packages include important performance improvements alongside the Remote Desktop fix.
• Temporary Workaround: For administrators preferring to wait for upcoming cumulative updates rather than installing the preview release, a temporary workaround is available. IT staff can disable the admin protection feature by adjusting the "User Account Control Type Of Admin Approval Mode" policy through Microsoft Intune or Group Policy.

Verification and Next Steps

Users experiencing Remote Desktop issues on Windows 11 24H2 or later can verify their system status by checking installed Windows updates in system settings. To confirm the fix, administrators should review update histories for KB5127936 or later cumulative releases. Organizations can also consult official Microsoft support channels and security bulletins for further documentation regarding Administrator protection configurations.