The widespread impact of this update, and subsequent cumulative updates that contain the same code, was immediate. Countless online reports and community discussions across Microsoft Q&A and specialized forums confirm that uninstalling KB5055528 instantly restored RDP functionality for affected users.
The Remote Desktop Protocol (RDP) error combination 0x3 (Extended 0x11)
Remote Desktop Protocol (RDP) is a cornerstone tool for system administrators, remote workers, and IT professionals. It allows seamless access to distant Windows environments. However, connection drops and cryptic error codes can stall your workflow. One of the most frustrating and common errors encountered is the . rdp 0x3 0x11
If this error specifically happens while you are connected to a corporate VPN, the issue is likely related to the Maximum Transmission Unit (MTU) size. VPN encapsulation adds overhead to network packets. If the packet size exceeds the MTU limit, packets get fragmented and dropped.
Look at your active connection name (e.g., "Wi-Fi" or "Ethernet"). The widespread impact of this update, and subsequent
, rdp 0x3 0x11 typically signals a fatal failure during the connection sequence —most frequently during the Network Level Authentication (NLA) phase or the SSL/TLS handshake . The client cannot locate the necessary endpoint or validate the security token, causing the session to abort.
If no update is found, visit your computer manufacturer's official website to download and install the latest network driver manually. Conclusion It allows seamless access to distant Windows environments
If troubleshooting doesn't resolve the issue, try the following solutions:
Performing an in-place upgrade of Windows Server (e.g., from 2016 or 2019 to 2022) can sometimes corrupt the Remote Desktop stack or the underlying security and authentication mechanisms. After such an upgrade, the RDP service may start and allow a connection, but post-login processes fail, resulting in a black screen and an immediate disconnect with the 0x3 / 0x11 error. In some instances, the built-in Administrator account might be missing from the Security Accounts Manager (SAM) database, a condition that effectively breaks all logon attempts.
On the , open the Group Policy Editor ( gpedit.msc ).