Microsoft Security Update – Remote Desktop Services Issues

Update timeline

1. monitoring Sep 14, 2026, 05:56 PM UTC

   Microsoft has confirmed an issue with its September 2026 Windows Security Updates that may cause Remote Desktop Services (RDS) to become unstable or stop responding on affected Windows Servers. Symptoms may include failed RDP connections, sign-in issues, or servers becoming unresponsive after the update is installed. This issue originates with the Microsoft security update and is currently pending remediation from Microsoft. Atlantic.Net is unable to correct the underlying issue or provide a permanent resolution. For customers with Managed Hardware or Services, Atlantic.Net Support can reboot an affected server upon request. A reboot may temporarily restore RDP functionality, but it does not resolve the underlying issue and the problem may recur. Please see our contact info below to request a reboot. Note that customers with On-Demand Cloud VMs can perform a reboot of their VM through the Cloud Control Panel if needed. See here for instructions: https://www.atlantic.net/vps-hosting/atlantic-net-cloud-how-to-soft-or-hard-reboot-a-atlantic-net-cloud-server/ Microsoft is actively working on a permanent resolution and has not yet provided a release date. We will continue to monitor Microsoft's updates and provide additional information as it becomes available. Support Contact Info Email: [email protected] Toll-Free: 1-888-618-DATA (3282) International: +1-321-206-3734

2. resolved Sep 16, 2026, 06:55 PM UTC

   Microsoft has released the following resolution statement: "This issue is resolved in Windows updates released on and after September 14, 2026 such as KB5129195. We recommend you install the latest Windows update for your device as it contains important improvements and issue resolutions, including this one." For more information, please see: https://support.microsoft.com/en-us/servicing/os/windows-11/2026/09/kb5124008-windows-11-24h2-25h2-security-update