Ensure Windows Firewall or third-party antivirus software isn't blocking the connection traffic mid-handshake.
Below is a technical white paper summarizing the causes and documented resolutions for this issue. 1. Error Definition
Type the following command to see your network interfaces: netsh interface ipv4 show subinterfaces rdp 0x3 0x11
Understanding and Fixing Remote Desktop Error Code 0x3 0x11 Remote Desktop Protocol (RDP) is a core tool for managing Windows environments. However, connection drops can disrupt your workflow. One of the most frustrating issues is the generic disconnection error, often logged in the Windows Event Viewer as (or 0x3 ) with an extended reason code of 17 (or 0x11 ).
(released April 11, 2025). The most effective solution is to remove this update and block it from reinstalling. Uninstall via Command Line Command Prompt PowerShell as an Administrator. Run the following command: wusa /uninstall /kb:5055528 Restart your computer after the process completes. Uninstall via GUI Windows Update Update history Uninstall updates in the list and click Alternative Troubleshooting Error Definition Type the following command to see
Ensure both client and server have the same CredSSP patch level.
The error codes and 0x11 in Remote Desktop Protocol (RDP) typically indicate specific failures during the session negotiation or file access phase. RDP Error 0x3: Extended Disconnect Reason (released April 11, 2025)
Before making any system changes, always consult the primary source of truth: the Windows . This tool logs detailed system events, including the ones that lead to the RDP disconnection.
When troubleshooting this issue, you are usually dealing with one of four architectural failures within the Windows Remote Desktop Services (RDS) ecosystem: