Asl matn EN tilida, manba saytidan olindi. Manba ↗

Microsoft has resolved a known issue that prevents non-admin users from connecting to devices via Remote Desktop when the "Administrator protection" security feature is enabled.

When Administrator protection is enabled, it prompts standard users to authenticate with Windows Hello (PIN or biometric) when they try to change the Windows Registry or install new apps.

This feature began rolling out in October 2025 and is now enabled by default in organizations using Windows security baselines after installing the October 2026 Windows security update.

Microsoft acknowledged on October 13 that Remote Desktop connections may fail with error 0xC000000D after installing the KB5124010 September 2026 non-security preview update (or Windows updates released since then) on systems running Windows 11 24H2 and later.

"This issue primarily affects enterprise-managed remote devices used as Remote Desktop hosts with Administrator protection enabled, regardless of how the feature was enabled," it said.

Remote Desktop connection failures now fixed

On Wednesday, Microsoft confirmed that this issue is fixed for users who installed this month's KB5127936 preview update.

"This issue was resolved by Windows updates released October 28, 2026 (KB5127936), and later," it noted. "We recommend you install the latest security update for your device as it contains important improvements and issue resolutions, including this one."

Microsoft also provides a temporary workaround for users who don't want to install this preview update and would rather wait for next month's Patch Tuesday cumulative updates, which requires IT administrators to disable the admin protection feature by resetting the "User Account Control Type Of Admin Approval Mode" policy via Microsoft Intune or Group Policy.

Microsoft fixed a similar issue in March 2025 that was causing Remote Desktop and RDS connection failures after installing Windows updates released since January 2025.

It also released emergency out-of-band Windows updates last month to fix Remote Desktop Services failures caused by the September 2026 security updates.

Once attackers have valid credentials, only 37% of their actions are blocked

Overall prevention scores can hide what happens after initial access. Once attackers are using valid credentials, prevention drops sharply.

The Blue Report 2026 measures defenses technique by technique across 338 million simulations run in customer production environments.

Get the report