Upgrade to Teleport 18.11 or newer if RDP sessions die when the client window resizes; the fix is in PR 67720. It is notoriously hard to reproduce consistently, so do not burn time on client or network debugging first; check your Teleport version against the fixed release.

Context: Issue gravitational/teleport#42487 (closed): RDP sessions were terminated on window resize events with a server-side graphics subsystem error, seen against Windows Server 2019. A contributor confirmed the error reproduced internally and linked it to an upstream IronRDP issue. Collaborator zmb3 confirmed the fix in PR 67720, landing in Teleport 18.11.